At what age do you worm kittens? I keep getting different answers when researching on the internet. I took in a pregnant stray (not much more than a kitten herself ( ) that was hanging around my garden/house..(eating my cats food, well wolfing every last drop of food) - she gave birth 2 weeks ago and I've read that you start worming at two weeks. What do I use? Can I get something from a Pet store? My guys get advocated every month. I'm guessing you wouldn't advocate a nursing mum??