Since my rack is in a semi-open place in my apartment I check temps and humidity every time I get up to go to the kitchen or bathroom. I physically pull the tubs out once or twice daily to check on the general condition of them, and pull them out of the tubs to inspect once or twice a week. to keep them conditioned to be used to me though, I try to touch them each time the drawer is opened. This also helps keep them from associating things coming in specifically with food, so hopefully it'll keep me from being bit. They seem to appreciate the privacy I give them for most of the time, and my littlest girl is always coming to the front to check ME out when I pull her tub out... I think she's got a little crush! lol