I'm currently feeding my girls Oxbow Essentials Young Rat and Mouse Food. They seem okay with it (they tolerate it, but they don't enjoy it as much as the knock-off fiesta mix). I'm beginning to have problems with them soiling their entire cage bottom with it. It's sort of a combination of their peeing and pooping everywhere and the Oxbow creating a bunch of dust. No matter how often I clean it, within minutes the girls rip through the food and turn it into this sawdust looking stuff that coats the bottom of the cage. They then pee on it, and it becomes a sludgy mess that is very difficult to clean. I know I'm not going to stop this, because it's just them eating - not a health or behavioral issue. Does anyone have this same problem? Is it the same with the adult formula? Is there any way I can make this less messy? My girls are about 10-12ish weeks old...is it okay to switch to the adult food yet, especially if it doesn't make as big of a mess????