It varies from day to day. On a daily basis I usually check in on everyone (just a quick drawer opening). If I find any that are ready for weaning I try to get them out right away. At this point the majority of my time spent goes to filling water bottles , but I am working on the auto watering system which should save me tons of time . Once a week each tub gets cleaned, which with 84 tubs can take awhile. Especially if alot of babies present, because I have to work around or carefully transfer babies. As far as feeding I usually fill their food troughs on cleaning day, sometimes with pregnant or nursing mice in tubs their will get topped off sometimes during check ins. I really wish I would have made their troughs a little bigger. So I guess you can say it keeps me busy!! LOL!!