My girls have a good sized tray in their house that they go potty in and I try to change that every 3-4 days and fleece bedding that I swap out for clean ones around the same time. However, it doesn't take more than a day until their cadge just has this strong urine smell wafting from it. It's not the worst thing ever but I can't afford bedding to change it every day. I was wondering if anyone knew any products that were safe and effective for dealing with this. They sell sprays and deodorizers at my local pet store but I worry those won't be good for my ratties. Thank you so much for your help!