Very easy to use. I got so many chemicals on top of chemicals its hard to say. Used it with onslaught as broadband on carpet. Dried quickly. Carpet very gummy and fleas are really vicious now so its doing something. I can't see them cept a few in dawn trap. Just babies. Haven't seen adults in my traps for months. Its forcing them on my cats more which of course I never see even in tub but I know they r scratching at something. My feet are dirty from walking on carpet. Will shampoo carpets eventually as Vac motor is giving out due to DE. I hope this is the working combo with Revolution on cats.