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Precor IGR is a growth regulator and does not kill any fleas. Itis made to prevent fleas from maturing into reproducing adults.IGR's are meant to be applied with another product that willactually kill the adults. IGR by itself will not yield anyimmediate results and will not kill any adult fleas.

Featuring the active ingredient (S)-methoprene, Precor® IGRConcentrate effectively breaks the flea’s life cycle. Thisformulation prevents flea infestations and provides residual fleacontrol. Precor® IGR Concentrate controls adult and pre-adult fleas(95% off flea populations).

For control of active flea infestations, this product works bestwhen combined with an most adulticides.

Case Qty 6 / CASE
Manufacturer WELLMARK [view products]
EPA# 2724-352
Active Ingredient (S) Methoprene .. 1.2%
Label zoe37740c_precor_igr_label_10012019.pdf
SDS zoe37740c_precor_igr_sds_10012019.pdf
Chemical Classes Insect Growth Regulator
Target Pests Fleas
Use Commercial & Residential Indoors & Outdoors: Apartments, Food Plants, Hospitals, Hotels, Restaurants, Schools, Warehouses, Golf Courses, Parks, Zoos and others
Application * See label for complete application instructions
Pet Safe Yes, if used as directed on label
Formulation Professional Product


* Precor® Insect Growth Regulator prevents flea emergence for up to seven months

* Provides professional flea control without disrupting household activities

* Heavier-than-air molecules go deep into the base of carpets and upholstery

* Can be tank mixed with adulticide for more severe infestations

When applied to surfaces where fleas are found, such as carpets, upholstered furniture, and pet sleeping areas, Precor IGR prevents adult flea emergence for up to 7 months. Controlling fleas on pets is important to prevent introduction of adult fleas indoors. If fleas are a problem on pets, treat the pets with an effective EPA registered flea control product.


Prepare a diluted spray solution with a final (S)- Methoprene concentration of approximately 0.007%, by adding 1 oz of Precor IGR to 1 gallon of water. Partially fill the mixing container with 1/2 gallon of water, add Precor IGR, shake well, and then add the remaining 1/2 gallon of water. Shake well before each use.

When tank-mixing, follow the directions above except add the product to tank mix first, agitate, and then add Precor IGR, agitate and complete filling of spray tank, and agitate once more. Apply at a rate of 1 gallon of the diluted spray solution per 1500 sq ft of surface area with any low pressure sprayer with a fan tip that is typically used for indoor applications.

Treat all areas harboring fleas, including carpets, furniture, pet sleeping and bedding areas, and throw rugs. Treat under cushions of upholstered furniture. Avoid contact with treated surfaces until dry.

When applying to upholstery where staining could be a concern, apply dilution to a small inconspicuous location to determine if possible staining could occur. Generally, Precor IGR will not stain areas that would not be stained by water alone.

Refer to the Product Label for approved application sites and methods.