I am re-building after my move and I am considering picking up 8 racks totaling 51 tubs. I plan to run 1-4 or 1.5 per tub.

Does anyone do something like that in their house?

I have 4 spare bedrooms and I have a 1000 ft partially finished (has an insulated and finished floor) attic that I can use.
I am just worried about smell and escapees.

Does anyone else do this and how does it work?