I use an eyedropper.

Mine is a liquid dewormer, I use black walnut with some clove oil for the cat. I tried doing another cat, she would foam at the mouth, eventually I copuld not catch her at all to give it to her. I gave up on her, tired of the scratches too. The other cat is just real easy, trusts me real good I guess, I simply open her mouth and squirt in on the back of her tongue. She musses a tad about the taste but gets over it in a couple minutes. She doesn't foam at the mouth. Just depends on the cat i guess.

I give her a bit of fried chicken livers as a treat a bit afterward so she responds real well for the reward. Just a good cat that one, better manners than my kid.

I use high doses with her so that missing a day here and there would not be such a big deal. She's on her second round now. The difference in her is obvious, a lot less itching and fanny licking.