Originally Posted by Coraline

I'm probably going to be the odd one out here and say I wouldn't worm an indoor cat on a regular basis at all. I'm of the opinion that an indoor cat is unlikely to get worms very often. I'd worm only if A) the cat was showing symptoms and B) it was confirmed by a vet. And then, I would treat not with chemicals but with DE, as I believe the wormers and flea treatments are basically poison for the cat.

I've recently used DE to treat my cat for fleas, and it worked perfectly. I'm now adding a little to his food every day to prevent another infestation. At higher doses it will kill off worms - if that was what I wanted to do. More info on DE here: Food Grade Diatomaceous Earth Helps Eliminate Worms & Parasites

Remember, this is my opinion only! I'm not saying you're all horrible cat parents because you're doing it differently We all want to do what's best for our cats, it's just that we have different opinions on what exactly that is. And that's ok