once a year to ensure safety, realiability, and effeciency.
A hamster cage should be cleaned weekly.
A horses stall should be cleaned every day.
You should not have to. If you do it means you have a problem.
It has to be cleaned every so often, mainly if you can see that it is dirty than you should clean it. And it really should be cleaned every 4-5 weeks.
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every day
It must be cleaned daily.
Draperies should generally be cleaned one or two times a year.
Internal STEAM yearly Hydronics not to often depending on water treatment
Every day
A stall should be cleaned twice a day or more and it has the most manure right after feeding
Gutters should be cleaned at least twice a year to prevent damage to windows.