I have a 1.3 ratio of soft furs right now and one of the females will drop babies here soon. Ill be getting a 1.4 ratio of rats here shortly. ASF's are cool to watch but they do play in there food alot if its in a bowl. Im going to make a 1/4" mesh hopper for them this weekend and use up my Kaytee Rat Blocks and then switch to some cheap dog food for them.