How long does it take before all worms are killed off when a cat has been given worming medication? My new little baby was supposed to have been wormed by his breeder (with Milbemax), but I just found a worm segment (very alive!) on his bottom. I haven't been able to get hold of the breeder yet to ask her when the worming took place, but will hopefully catch her later today.
So, could it be that the worms just haven't died off yet? Or did he not get his worming pill?