1.3 Have to clean once a week.
Still no problems with mine. No chewing. They seem happy in there. lots of babies.Big litters.:D
I looked at cement mixing tubs and cat litter pans too. Then one morning I was having breakfast in a local spot(two poached eggs on corned beef hash with rye toast with caraway seeds, and coffee) when I saw the bus tubs. Like I said before they look like the tubs ARS uses in the rat rack they sell.
I am building a second one.