I have three females in a custom 6' x 3' cage. One of them is dumping food on the ground and using it as a bathroom. The wet food then breaks up and clumps all over the cage and sometimes the pigs. They have a gravity feeder so they do not have bowls to tip over, but they are still managing to get food on the ground. They have toys and they get floor time so I don't think they are doing this out of boredom. I've even tried different foods to see if another kind of pellet will make less of a mess. There is plenty of bedding in the cage. I've had many guinea pigs over the years and this is the first time I've had this problem. Constantly cleaning this nasty mess out of the cage is driving me crazy. Does anyone have any other suggestions?