Acclaim is a long-lasting environmental household flea spray. It contains two active ingredients; one to kill adult fleas & a second to prevent existing eggs & larvae from developing into adult fleas for 12 months. Acclaim contains two active ingredients: A fast-acting adulticide which kills any flea it comes into contact with for at least 6 weeks (Permethrin) A long-lasting insect growth regulator which controls the immature flea life–cycle stages & protects the home for a full 12 months (Methoprene) One can of Acclaim covers 175 m 2 the largest area of any veterinary environmental flea treatment (the equivalent of an average four-bedroom house) Acclaim is also odour-free leaving no lingering smell after spraying. When used as directed Acclaim is safe for your family your home & your pets. Acclaim is licensed to kill house-dust mites a common cause of allergy in pets. The product also kills ants cockroaches ticks & spiders.