Rolly pollies, also known as pillbugs or sowbugs, are common household pests that invade damp basements, crawl spaces, and gardens, causing nuisance problems for homeowners. Selecting the best insecticide for rolly pollies requires understanding their biology, habitat preferences, and the specific active ingredients that effectively control these crustacean pests.

Unlike insects, rolly pollies are terrestrial crustaceans that breathe through gills, requiring moist environments to survive. These pests feed on decaying organic matter but can damage seedlings, young plants, and garden vegetables when populations become excessive. Effective control requires moisture reduction, habitat modification, and targeted insecticide applications.

Research from entomology extension services indicates that rolly pollies can reach populations of hundreds per square foot in favorable conditions, with females carrying up to 200 eggs in brood pouches. Additionally, these pests are primarily nocturnal and hide during daylight hours, making thorough treatment of harborage areas essential for effective control.

In this guide, we examine the top 10 best insecticides for rolly pollies, evaluating active ingredients, application methods, residual effectiveness, and overall control to help you manage these persistent household pests.

10 Best Insecticide For Rolly Pollies

1. Bifen IT (Bifenthrin) – Best professional rolly polly killer for homes

Bifen IT is the best professional rolly polly killer for homes, featuring bifenthrin as the active ingredient that provides rapid knockdown and up to 90 days of residual control. The microencapsulated formulation adheres to surfaces where rolly pollies crawl and hide, maintaining effectiveness in damp basement conditions. Additionally, bifenthrin disrupts the nervous system of these crustaceans upon contact, providing quick relief from active infestations.

The professional-grade concentrate allows for economical treatment of basements, crawl spaces, and foundation perimeters, making it suitable for comprehensive home protection. Consequently, a single application provides weeks of protection, significantly reducing rolly polly populations and preventing entry into living spaces. Moreover, bifenthrin also controls other crawling pests, including spiders, ants, and earwigs, providing comprehensive pest management.

Bifen IT remains effective in damp conditions, maintaining its protective barrier between applications and ensuring consistent control in basements and crawl spaces. The versatile formulation can be applied with standard spray equipment for thorough coverage. Therefore, this product is the preferred choice for homeowners seeking professional-grade rolly polly control.

Pros

• Professional-grade
• 90-day residual
• Damp-safe
• Economical concentrate
• Broad-spectrum
• Weather-proof
• Effective knockdown

Cons

• Requires sprayer
• Costly initial
• Mixing required

2. Talstar P (Bifenthrin) – Best all-purpose rolly polly insecticide for basements

Talstar P is the best all-purpose rolly polly insecticide for basements, featuring bifenthrin as the active ingredient with a versatile formulation suitable for both indoor and outdoor applications. The professional-grade concentrate provides rapid knockdown of rolly pollies while delivering up to 90 days of residual control when applied to surfaces. Additionally, Talstar P is effective against more than 75 different pests, providing comprehensive pest management.

The microencapsulated formula resists degradation in damp basement conditions, maintaining its protective barrier between applications for consistent control. Consequently, homeowners can treat basement walls, floor edges, and crawl spaces with a single product that provides lasting rolly polly control. Moreover, Talstar P is labeled for use in crawling insect control programs, making it a preferred product for pest management professionals.

Talstar P maintains effectiveness in various indoor conditions and resists degradation from humidity, ensuring reliable performance in basements and crawl spaces. The versatile formulation can be applied with standard spray equipment for economical large-area treatment. Thus, this insecticide delivers comprehensive, professional-quality rolly polly protection for residential basements.

Pros

• Versatile use
• 90-day residual
• Indoor/outdoor
• Broad-spectrum
• Professional-grade
• Basement-safe
• Effective knockdown

Cons

• Requires sprayer
• Costly
• Mixing required

3. Suspend SC (Deltamethrin) – Best low-odor rolly polly spray for indoors

Suspend SC is the best low-odor rolly polly spray for indoors, featuring deltamethrin as the active ingredient with a suspension concentrate formulation that provides effective residual control without strong chemical odors. The microencapsulated particles provide extended release, maintaining effectiveness for up to 90 days on treated surfaces. Additionally, the low-odor formula makes it ideal for treating basements, living areas, and other occupied spaces.

The suspension concentrate formulation adheres well to baseboards, window frames, and cracks where rolly pollies hide during daylight hours. Consequently, treated areas provide a protective barrier that kills these crustaceans upon contact, reducing populations around living spaces. Moreover, deltamethrin is effective against a broad spectrum of crawling pests, enhancing indoor comfort.

Suspend SC maintains effectiveness in various indoor conditions, resisting degradation from humidity and temperature fluctuations common in basements and crawl spaces. The product is labeled for use on multiple indoor surfaces, including baseboards, window sills, and wall voids. Therefore, this insecticide provides reliable, low-odor rolly polly protection for residential interiors.

Pros

• Low-odor formula
• 90-day residual
• Indoor-safe
• Effective adhesion
• Broad-spectrum
• Long-lasting
• Residential use

Cons

• Requires sprayer
• Premium price
• Mixing required

4. Ortho Home Defense Insect Killer – Best consumer rolly polly spray for homes

Ortho Home Defense Insect Killer is the best consumer rolly polly spray for homes, featuring bifenthrin as the active ingredient in a ready-to-use formulation with an easy-to-use trigger or wand spray. The convenient design allows for targeted application to baseboards, corners, and other areas where rolly pollies gather. Additionally, the formulation provides up to 12 months of indoor protection when applied correctly.

The ready-to-use design eliminates mixing guesswork, making it accessible for homeowners who prefer simple, effective rolly polly control solutions. Consequently, a single application creates a protective barrier around living spaces that persists through seasonal changes. Moreover, Ortho also controls spiders, ants, and other crawling insects, providing comprehensive indoor protection.

Ortho’s wand spray ensures even coverage of baseboards, window frames, and cracks where rolly pollies hide, maximizing the product’s effectiveness. The formula is designed for indoor use on multiple surfaces and includes a crevice attachment for hard-to-reach areas. Therefore, this product provides convenient, effective rolly polly control for residential interiors.

Pros

• Ready-to-use
• Easy application
• 12-month protection
• Affordable
• Broad coverage
• Consumer-friendly
• Versatile use

Cons

• Limited coverage
• Can stain surfaces
• Stronger odor

5. Demon WP (Cypermethrin) – Best rolly polly wettable powder for crawl spaces

Demon WP is the best rolly polly wettable powder for crawl spaces, featuring cypermethrin in a water-dispersible granule formulation that provides excellent residual control on porous surfaces. The wettable powder adheres effectively to concrete, wood, and masonry where rolly pollies hide, providing extended protection against these persistent pests. Additionally, the visible white residue confirms thorough application coverage, ensuring effective control.

The powder formulation mixes readily with water for application with standard spray equipment, providing cost-effective coverage of basements, garages, and crawl spaces. Consequently, treated surfaces provide a protective barrier that kills rolly pollies upon contact for weeks after application. Moreover, Demon WP is effective against spiders, ants, and other crawling pests, providing comprehensive structural pest management.

Demon WP resists degradation in damp conditions, maintaining its effectiveness through periods of high humidity common in basements and crawl spaces. The formulation also provides long-term control on outdoor surfaces around the home perimeter. Therefore, this product delivers reliable rolly polly protection in a cost-effective formulation.

Pros

• Wettable powder
• Excellent adhesion
• Visible residue
• Long residual
• Porous-safe
• Broad-spectrum
• Professional quality

Cons

• Visible residue
• Requires sprayer
• Mixing required

6. Cyper WSP (Cypermethrin) – Best fast-acting rolly polly killer for homes

Cyper WSP is the best fast-acting rolly polly killer for homes, featuring cypermethrin in a water-soluble packet formulation that provides rapid knockdown and extended residual control. The convenient pre-measured packets eliminate mixing guesswork while delivering professional-grade performance against rolly pollies. Additionally, the fast-acting formula provides quick relief from active infestations.

The water-soluble packets dissolve completely in water for application with standard spray equipment, providing consistent results every time. Consequently, homeowners can treat basements, garages, and living areas with professional-grade insecticide that kills rolly pollies on contact. Moreover, Cyper WSP is effective against a broad spectrum of pests, providing comprehensive home protection.

Cyper WSP maintains effectiveness on various indoor and outdoor surfaces, providing reliable control through changing conditions. The convenient packet formulation ensures accurate mixing and consistent performance. Therefore, this product delivers professional-quality rolly polly control with simplified mixing.

Pros

• Fast-acting
• Water-soluble packets
• Easy mixing
• Professional-grade
• Broad-spectrum
• Versatile use
• Effective knockdown

Cons

• Requires sprayer
• Costly
• Limited to packets

7. Tempo SC Ultra (Cyfluthrin) – Best rolly polly spray for garden areas

Tempo SC Ultra is the best rolly polly spray for garden areas, featuring cyfluthrin as the active ingredient with an ultra-low odor formulation suitable for outdoor application near plants. The suspension concentrate provides rapid knockdown and extended residual control of rolly pollies in gardens, flower beds, and landscape areas. Additionally, the low-odor formula makes it ideal for treating outdoor spaces where odor sensitivity is a concern.

The microencapsulated formulation adheres to soil, mulch, and vegetation where rolly pollies hide and feed, providing reliable control in outdoor environments. Consequently, treated garden areas receive long-lasting protection against these pests with minimal odor impact. Moreover, Tempo SC Ultra is effective against other garden pests, enhancing overall plant health.

Tempo SC Ultra maintains effectiveness in various outdoor conditions, resisting degradation from UV exposure and temperature fluctuations common in garden environments. The versatile formulation can be applied with standard spray equipment for thorough coverage. Therefore, this product delivers effective, low-odor rolly polly control for garden and landscape applications.

Pros

• Low-odor
• Garden-safe
• Long residual
• Broad-spectrum
• Effective adhesion
• Professional-grade
• Outdoor-safe

Cons

• Requires sprayer
• Premium price
• Mixing required

8. Spectracide Bug Stop Indoor/Outdoor Spray – Best budget rolly polly killer

Spectracide Bug Stop Indoor/Outdoor Spray is the best budget rolly polly killer, offering an affordable solution for homeowners seeking effective control without premium pricing. The ready-to-use formulation contains a combination of active ingredients that provide rapid knockdown and residual control of rolly pollies. Additionally, the versatile spray works on multiple surfaces and is suitable for both indoor and outdoor applications.

The convenient trigger spray allows for targeted application to baseboards, corners, window frames, and other areas where rolly pollies gather. Consequently, homeowners can treat problem areas quickly and economically without specialized equipment. Moreover, Spectracide also controls ants, roaches, and other crawling pests, providing value for budget-conscious consumers.

Spectracide provides adequate residual protection for moderate infestations, making it suitable for occasional use and maintenance applications. The affordable price point makes it accessible for homeowners on tight budgets. Therefore, this product delivers acceptable rolly polly control at a budget-friendly price.

Pros

• Affordable
• Ready-to-use
• Indoor/outdoor
• Broad-spectrum
• Easy application
• Trigger spray
• Good value

Cons

• Shorter residual
• Stronger odor
• Limited coverage

9. EcoSmart Organic Pest Control – Best natural rolly polly spray

EcoSmart Organic Pest Control is the best natural rolly polly spray, featuring plant-based oils including rosemary, peppermint, and clove that kill rolly pollies without synthetic chemicals. The essential oil blend disrupts the respiratory systems of these crustaceans upon contact, providing effective control of active populations. Additionally, the formula is biodegradable and safe for use around children and pets when applied as directed.

The ready-to-use spray simplifies application, allowing homeowners to treat basements, gardens, and living areas without specialized equipment or chemical exposure concerns. Consequently, families can control rolly polly populations without harsh residues or lingering chemical odors. Moreover, the botanical formulation also repels other crawling pests, enhancing indoor and outdoor comfort.

EcoSmart provides a safer alternative for homeowners concerned about synthetic insecticide exposure while still delivering effective control of rolly pollies. The pleasant botanical scent makes indoor application more agreeable than chemical alternatives. Therefore, this product represents an effective natural option for rolly polly management.

Pros

• Plant-based
• Biodegradable
• Safe around pets
• Pleasant scent
• Ready-to-use
• Natural formula
• Family-safe

Cons

• Short residual
• Costly
• Kill-on-contact

10. Demand CS (Lambda-cyhalothrin) – Best long-lasting rolly polly insecticide

Demand CS is the best long-lasting rolly polly insecticide, featuring lambda-cyhalothrin as the active ingredient with an advanced capsule suspension formulation that provides exceptional residual control. The microencapsulated particles protect the active ingredient from degradation, maintaining effectiveness for up to 90 days on treated surfaces. Additionally, the capsules adhere strongly to various surfaces, providing reliable control even in challenging conditions.

The advanced formulation provides superior adhesion to baseboards, window frames, and wall voids where rolly pollies hide, ensuring consistent knockdown and residual control. Consequently, a single application provides extended protection, reducing the need for frequent retreatment. Moreover, Demand CS is effective against a broad spectrum of pests, providing comprehensive indoor protection.

Demand CS maintains effectiveness in various indoor conditions, resisting degradation from humidity and temperature fluctuations common in basements and crawl spaces. The versatile formulation can be applied with standard spray equipment for thorough coverage. Therefore, this product delivers exceptional longevity for demanding rolly polly control applications.

Pros

• Longest residual
• Superior adhesion
• Weather-resistant
• Broad-spectrum
• Professional-grade
• Versatile use
• Effective knockdown

Cons

• Requires sprayer
• Premium price
• Mixing required

7 Essential Strategies For Rolly Polly Control

• Reduce moisture levels: Fix leaks, improve drainage, and use dehumidifiers to eliminate the damp conditions that attract and support rolly polly populations in basements and crawl spaces.
• Apply residual barrier sprays: Treat baseboards, window frames, corners, and foundation perimeters with professional-grade insecticides like Bifen IT or Talstar P to create a protective barrier that kills rolly pollies on contact.
• Remove organic debris: Clear leaf litter, mulch, and decaying vegetation from around the home foundation where rolly pollies breed and harbor. Keep mulch at least 6 inches from the foundation wall.
• Seal entry points: Close cracks, gaps, and openings around doors, windows, and foundation walls to prevent rolly pollies from entering living spaces from outdoor populations.
• Reduce outdoor lighting: Rolly pollies are attracted to areas where insects gather around lights. Use yellow bulbs or motion-sensor lighting to reduce insect prey and subsequent pest populations.
• Maintain yard vegetation: Keep grass cut short, trim shrubs, and reduce leaf litter near the home foundation where rolly pollies breed and enter structures.
• Use glue traps for monitoring: Place sticky traps in basements, corners, and along baseboards to monitor rolly polly activity and identify problem areas for targeted treatment.

Frequently Asked Questions About Rolly Polly Insecticides

1. What is the best insecticide for killing rolly pollies?

Bifen IT (bifenthrin) is widely considered the best insecticide for rolly pollies, providing rapid knockdown and up to 90 days of residual control in basements, crawl spaces, and garden areas. Talstar P and Suspend SC also deliver excellent professional-grade protection.

2. Are rolly pollies harmful to humans?

No, rolly pollies are not harmful to humans. They do not bite, sting, or transmit diseases. However, they can become a nuisance when populations are high and they invade living spaces.

3. What is the difference between pillbugs and sowbugs?

Pillbugs (rolly pollies) can roll into a tight ball when disturbed, while sowbugs have flatter bodies and cannot roll into a ball. Both are terrestrial crustaceans that require moist environments to survive.

4. How do I get rid of rolly pollies naturally?

Natural rolly polly control includes reducing moisture, removing organic debris, sealing entry points, and using natural repellents like EcoSmart Organic Pest Control or diatomaceous earth in dry areas.

5. Can I use DEET to repel rolly pollies?

DEET-based repellents are primarily effective on insects and may have limited effect on rolly pollies. Residual insecticide sprays and habitat modification are more effective for rolly polly control in homes.

6. How long do rolly pollies live?

Rolly pollies typically live 2-3 years, with females producing multiple broods of up to 200 eggs throughout their lifetimes. Populations can grow rapidly in favorable conditions.

7. Why do I have so many rolly pollies in my basement?

Basements provide ideal conditions for rolly pollies with high humidity, darkness, and abundant food sources (decaying organic matter). Damp basements with clutter provide excellent habitat and breeding sites.

Conclusion

In conclusion, selecting the best insecticide for rolly pollies requires understanding these crustacean pests’ biology, habitat preferences, and the importance of moisture reduction for effective control. Bifen IT stands as the best overall choice for most homeowners, offering professional-grade bifenthrin formulation with up to 90-day residual control and versatile indoor/outdoor application for comprehensive protection.

Talstar P serves as the runner-up, providing broad-spectrum pest control with reliable performance in basements, crawl spaces, and garden areas. Both products deliver the knockdown and residual protection needed to effectively manage rolly polly populations and prevent invasions into living spaces.

For homeowners seeking natural alternatives, EcoSmart Organic Pest Control offers effective plant-based control without synthetic chemicals. Budget-conscious consumers will appreciate Spectracide Bug Stop’s affordable pricing. Ortho Home Defense provides convenient ready-to-use application for those preferring simple solutions.

Choose the insecticide that best matches your specific needs, application preferences, and environmental concerns to achieve effective rolly polly control. Combine chemical treatments with moisture reduction, debris removal, and sealing entry points to maintain a pest-free home environment throughout the year.