Once a month
You should make sure that its in a clean place but you should clean it every few days
You should clean it everyday that you use it.
You should clean your Clarinet every time you play in it.
you should really clean your horses stall from 3-6 days of the week.
Using CCleaner will really improve your computer speed.
You should clean any computer case about once a month. However, Antec computer cases usually come with dust filters, so it's possible for them to last a little longer without a cleaning before getting too dirty.
When you have a spa used by the public you want to drain it often. The water in the spa should always be clear and clean.
A sweeper with soft brush for the plastic and computer wipes for the screen.
once a week.
daily
There is no requirement that they ever do it. The body keeps itself clean.
At least once a year open it up and clean out all the dust.