every week or every other week
not very often as it may rip or shrink
There are many types of feeders for just about every type of horse set-up, from mangers or feed troughs, to hay feeders or buckets. They can be expensive and elaborate or it can be as simple and cheap as a Fortaflex bucket. Most horses don't care just as long as you put their food in it.
DailyDaily
if you want to be safe, every day or so
At least twice a year or when ever it is needed
Every hour
A lab coat should be washed after every use to maintain cleanliness and hygiene in a laboratory setting.
Daily you should always clean your horses stall at least once a day
A horses stall should be cleaned every day if possible but if not every other day.
You should change them after every feeding because they should be washed after every feeding.
a stall?? Once daily...
Every hour, or as required