about 1-3 times a year suffice it to say more often you clean your A/C the better it work also culminating in lower electric bills
The purpose of the window AC drip pan is to collect and drain condensation that forms during the cooling process. It should be cleaned at least once a month to prevent clogs and ensure proper functioning of the air conditioner.
A hamster cage should be cleaned weekly.
A horses stall should be cleaned every day.
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.
It must be cleaned daily.
every day
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Draperies should generally be cleaned one or two times a year.
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.
Every day
A bird bath should be cleaned based on the amount of usage. If your bird bath is frequently used, then you should clean it every week or so. If it isn't, then it should be cleaned at least monthly.