I purchased this for my cats to try after a recent flea incident in the house.  I tried to mix the suspension with their food (I tried dry food and wet treats)... they sniffed it and walked away.  I then followed the instructions and had to hold the cat and squirt the suspension into their mouth.  It was messy, they hated it.. and I felt horrible trying to get them to take all of it.  I'm sticking with Frontline Plus...much easier for my cats.