I have to order Fromm's online as well, and I have used PetFlow w/absolutely NO issues!!! Plus I get free shipping so that helps… LOL You can rotate varieties on Fromm's, but obviously give them a couple of weeks to look for reactions. When you switch initially to Fromm's you need to go slow… I would pace it out over at least a week to 10 days if possible. Sometimes w/the loose stools it could be that you need to cut back on the food portions. You can also give them some pure pumpkin (NOT pie filling) to help firm up the stools.