Virbac Knockout Flea and Tick Room Fogger kills adult and pre-adult fleas, including flea eggs for up to 7 months . With Nylar (Pyriproxyfen) insect growth regulator, Knockout continues to kill hatching fleas for 7 months by preventing their development into adults. The fogger reaches fleas (and other insects) hidden in carpets, rugs, drapes, upholstery, pet bedding, floor cracks and open cabinets.

Virbac Knockout Flea and Tick Room Fogger also kills cockroaches, spiders, ants and ticks including deer ticks and other species that may carry or transmit Lyme Disease.

Contains Pyrethrins, Permethrin, and an IGR (Insect Growth Regulator) which is an insect juvenile hormone that prevents the pre-adult flea from turning into an adult biting flea.