“I guess it worked on some of our cats. I used a flea comb on them a few weeks after treatment. The kitten and one cat didn't have fleas, but the twins were infested with them, plus the cat who was without fleas, got fleas by sleeping together with the infested one. Also, we haven't washed the bedding yet, having been without a washing machine and catching up on the other laundry. The flea comb and a drop of cat shampoo in a dish tub half full of warm or hot water works great though. It's not enough to just have the water, because the fleas will swim to the rim and get out. And it doesn't need to be flea shampoo, which I didn't use. I think the ear mite part of the medicine worked.”