Learn how to effectively use Precor IGR Concentrate by Zoecon to control and prevent fleas in your home and on pets. Safe and easy application.
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Precor IGR Concentrate for Fleas by Zoecon

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Before starting, remove pets, children, and food from the areas you’ll treat. Open windows for ventilation if possible, and wear gloves to keep your skin safe. Clear clutter off carpets and floors so you can treat all surfaces where fleas may hide. Vacuum carpets, rugs, and upholstery thoroughly so that the treatment works better—dispose of the vacuum bag or empty the canister right away outside your home.
Precor IGR Concentrate needs to be mixed with water to create a solution. Find a clean spray bottle or a pump-up garden sprayer, whichever you prefer. Shake the Precor bottle well before opening.
Fleas like hiding in places where pets spend time, especially in carpets, rugs, cracks, pet bedding, floor edges, and upholstered furniture.
Let all treated areas dry completely before allowing people or pets back inside. This usually takes about 1–2 hours, depending on ventilation and room humidity. Keep windows open and fans running if possible to help it dry faster. Do not touch, walk on, or replace any items until the surfaces are totally dry.
Clean out your spray container with soap and water. Store any leftover concentrate tightly sealed and away from children and pets, in a cool, dry place—not next to food or animal feed.
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Call now for same-day, eco-friendly pest control
With over 20 years of experience, Anchor Pest offers personalized, chemical-safe treatments for homes and businesses across Manchester and surrounding counties
Precor IGR Concentrate for Fleas by Zoecon is a professional-grade liquid product designed to help control flea infestations by preventing flea eggs and larvae from developing into adult fleas. The main ingredient is an insect growth regulator, or IGR, called (S)-methoprene. IGRs do not kill fleas immediately, but instead work by disrupting the flea life cycle, making them unable to grow or reproduce. This approach helps provide long-term control of fleas in homes and animal environments without relying only on toxic insecticides that kill adult fleas.
IGRs are special chemicals that mimic the natural hormones in insects responsible for their growth and development. When fleas come into contact with an IGR like (S)-methoprene, their development is stopped at the egg or larval stage—they cannot turn into biting, reproducing adults. Because only adult fleas can bite and lay eggs, using an IGR effectively stops the flea population from growing, quickly reducing infestation over time as new generations are halted.
The active ingredient, (S)-methoprene, is chemically similar to hormones that regulate flea growth. When fleas contact or ingest it, the chemical signal tricks their bodies, preventing larvae from becoming adult fleas. Without mature adults, fleas cannot bite humans or pets, and they can't lay eggs to continue the infestation. Over several weeks, as existing adults die off naturally, the flea population in the environment collapses because no new adults are produced.
Precor IGR is most commonly used by pest control professionals and pet owners with ongoing flea issues. It is applied to surfaces where flea eggs and larvae hide: carpets, rugs, upholstered furniture, pet beds, and cracks or crevices near where pets sleep or rest. Its residual effect makes it a primary tool in breaking the flea breeding cycle in homes, kennels, and veterinary environments.
Precor IGR Concentrate for Fleas by Zoecon is a specialized liquid product that helps control fleas long-term by preventing immature fleas from growing into adults. Its main ingredient (an IGR) interrupts the natural flea life cycle, meaning fewer bites and less chance of reinfestation. Safe for use in living spaces and effective as a long-lasting component of a complete flea management plan, it is trusted by professionals and pet owners for its focused and scientific approach to flea control.
Our certified technicians eliminate pests infestations completely and permanently.
Here's what you get:
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Trained experts identify entry points and nesting areas
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Pet and family-friendly methods used
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Targets entire colony, not just visible insects or rodents
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Long-term exclusion strategies
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Proper cleanup and sanitization
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Service warranty and follow-up visits
Complete property assessment within 24 hours
Safe, effective treatment of entire colony
Long-term exclusion and monitoring
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