Excellent wormer as unlike Cestem, it did not make my Greyhound sick or, restless the next day. It as also controls lungworm which most other wormers miss. However, she was not fooled by the 'wormer-trying-to-be-a-doggy-chew' ploy after the first tablet (she needed 2). I then had an extremely difficult task trying to get the second one down her, because even disguised in food, she was very suspicious and managed to eat around the wormer. I will definitely use this wormer again, I'll just be more wily in how I give it her.