i have 6 cats, two of my kittens have had diarrhea for 3 weeks now, they are 5 mos. and 3 1/2 mos old, i have taken them to the vet, had them dewormed, and they just finished 10 days of Flagyl that the vet prescribed. They dont act like they are in destress, they eat well, drink well and play. only the two of them have it, the vet did 2 stool samples to check for worms and nothing turned up. i have tried everything i know to do, any input would be appreciated. i heard you could give them metamucil (jellified in their food) and that might help, havent tried it yet though. They havent had any sudden change of food either. if anyone else has had any kind of problem like this and has any advice to offer, i would greatly appreciate it. Thanks!