It does not work. Put 25lbs on yard in Feb 2016 it was questionable due to winter. purchased 2 additional bags in Apr. 2016 applied May 2 it rained so I applied additional bag a week later. Still have fleas. Yes Both times the dogs were bathed and the house sprayed. My dogs do not go outside areas that were treated. I called to get more info and about warranty and was told they don't warranty any of they products. They just tried to sell me something else as they did when I purchased this product.