A common household pest often found around pets, fleas have narrow bodies which allow them to glide through fur easily. Side to side, they are almost flat, allowing them to stealthily maneuver. Their back legs are well developed, allowing them to jump up to six inches in the air. Their mouths have piercing parts, allowing them to dig into their host and suck blood to sustain themselves. Powered by the insect growth regulator (IGR), (S)-methoprene, the Precor® family of products from Zoëcon® offers a variety of professional flea products that deliver 7 months of protection from flea emergence. Learn more about flea behavior, where to find them and the different ways you can treat for them with the information provided below.
  • Flea size: Less than 1/4 inch
  • Flea color: Dark brown
  • Other distinct features: Narrow, several spines across body including near the head, several hairs across body, wingless
  • Females lay 400-800 eggs over course of life
  • Flea larvae feed on dried blood, adult flea excrement
  • Mature larvae cocoon and pupate
  • Development from egg to adult can range from 16 days to a year
  • Feeds on blood of host (cats, dogs, humans and other animals) for reproduction
  • Remains embedded with host until death or scratched off
  • Deposits eggs on host that may fall off and infest environment
  • Spread by contact with infested environment or other animals
  • Pet bedding
  • Cracks/crevices of floor
  • Deep in carpet
  • Upholstery
  • Drapes
  • Vacuum all rugs, carpets, and furniture before treatment
  • After treatment, vacuum every day for one week or every two days for two weeks
  • Fleas present, but severity unknown
  • Pets excessively scratching
  • Pets have reddened/irritated skin
  • Small, black excrement present in pet’s fur
  • Flea bites on humans usually occur around ankles and lower legs
  • Annoyance to pets
  • Hair loss in pets
  • Skin damage to pets
  • Can transmit murine typhus to humans
Zoecon Active Ingredients S-methoprene

How (S)-methoprene Controls Fleas

Precor® products are formulated with the core active ingredient, (S)-methoprene. This IGR, developed by experts at Zoecon, has been used for more than 45 years by pest control and public health professionals to prevent fleas from developing into breeding, biting adult insects. The IGR penetrates and migrates deep into places like the base of carpet fibers and between furniture cushions to prevent the pre-adult flea you don’t see. (S)-Methoprene stops the development of immature fleas into adults, thus breaking the flea life cycle.

Flea control products

To accommodate an array of application sites, Zoëcon has developed several unique formulations of Precor® products that prevent pre-adult flea emergence as well as kill adults.
Zoecon Precor 2625 Spray

Precor® 2625 Premise Spray

Featuring (S)-methoprene and etofenprox, Precor® 2625 Premise Spray is an ideal solution for residual flea control.

Zoecon Precor 2000 Spray

Precor® 2000 Plus Premise Spray

This proven flea IGR provides pest management professionals with a solution they can count on, for up to seven months of flea control.

Precor® IGR Concentrate

This formulation prevents flea infestations while providing residual flea control on both adult and pre-adult fleas (95% of flea populations).

Zoecon Precor Plus Fogger

Precor® Plus Fogger

Designed for indoor use, Precor® Plus Fogger treats large spaces and is well-suited for professional flea control in hard-to-treat areas.

Zoecon Petcor

Petcor® Flea Spray For Dogs, Puppies, Cats & Kittens

Used for on-animal flea control, Petcor® Flea Spray can be used as a dog and cat flea spray to stop flea eggs from hatching for up to 63 days while killing adult fleas for up to 7 days.


We’ve made all of this information easier to print and share with our Flea Poster, Precor® Family Brochure, and Flea Home Treatment Brochure. Simply download and print out to provide your team with the information needed to offer sound advice and treatment recommendations for your customers.