What should be done if fleas do not die? - briefly
Apply a professional‑grade insecticide and repeat the treatment as directed, washing all bedding and vacuuming thoroughly afterward. If the problem continues, contact a licensed pest‑control specialist for targeted intervention.
What should be done if fleas do not die? - in detail
If a flea infestation remains after initial treatment, a systematic approach is required. Begin by confirming that the product used was appropriate for the species and life‑stage present; many over‑the‑counter sprays target adult fleas only and leave eggs and larvae untouched. Switch to a regimen that includes an insect growth regulator (IGR) such as methoprene or pyriproxyfen, which interrupts development from egg to adult.
Next, treat the animal host. Administer a veterinarian‑approved oral or topical flea medication that provides both adulticidal and larvicidal action. Ensure the dosage matches the pet’s weight and repeat according to the label, typically every 30 days, to break the life cycle.
Environmental control follows:
- Vacuum all carpeted areas, upholstery, and pet bedding thoroughly; discard the vacuum bag or clean the canister immediately.
- Wash removable fabrics (blankets, pillowcases, curtains) in hot water (≥ 60 °C) and dry on high heat.
- Apply a residual spray or fogger containing an IGR to cracks, baseboards, and under furniture; allow proper ventilation and follow safety instructions.
- Seal cracks and crevices where fleas may hide, reducing refuges for immature stages.
Monitor progress by inspecting the pet and surroundings daily for live fleas or flea dirt (black specks). Use a flea comb on the animal for at least a week to capture any remaining insects. If counts persist beyond two weeks, consider professional pest‑control services that can apply licensed adulticides and deep‑penetrating treatments.
Finally, maintain prevention. Keep the pet on a year‑round flea prophylactic, keep living spaces clean, and regularly treat the yard with appropriate insecticides if pets have outdoor access. Consistent preventive measures prevent re‑infestation and ensure that any surviving fleas are eliminated promptly.