Thanks. I was going to grab some 52L containers from Bunnings and wire, and make something similar to the commercial tubs.
I'll look into the racks, thanks for the heads up. Do the lids need to be secured? I would have thought so but in the above images they do not appear to be?
I caught the two that got out, they didn't go far, just went and snuggled in the hay I had lying around. But yes, from this experience rat traps would be a good idea.