The Diotomaceous Earth works well for wood floors and furniture. It works because the fine particles in it get under the fleas exoskeleton and the sucker dries out. Fleas can breed in the cracks inn wood floors but the fine powder stays in there and gets the larvae. Food grade diotomaceous earth actually kills intestinal worms when ingested, but it would not kill heartworms, which are transmitted via mosquito bites. If you have an inside cat, there is absolutely NO reason to choose Advantage Multi over Advantage II or even plain Advantage, and Revolution os overkill on a continual basis. Fleas are an ongoing problem and they do build up immunity to any poisonous product used, which is why constant rotation is good, but they can't defend themselves against a physical drying agent like diotomatceous earth, borax, or boric acid powder.
Last edited: