Teach your rattie to ride in a belly bag but be very careful for their tale with the zipper. Also keep and eye on the belly bag to make sure your rattie is not chewing out... check the bag each time you use it and yes, belly bags can be washed in a washing machine and hung to dry.
RAT FABRIC COVERED FLIP FLOPS WITH RATTIE CHARM (XL)
In the high plains of South Dakota, USA