I'm kind of ashamed but I don't clean them very often unless they're extremely dirty, or I'm getting a new horse, your horse has had a skin disease and no longer has it etc.
I wish I could say once a month but if I'm being honest, about every 3 months (with soap) but about every 2 weeks I get the hair and debris out
I try to do a dry cleaning every other time I use them and usually every few weeks a water or wet cleaning
I try to clean once a month
I would clean them if there appsoluitly disgus