I have used a *teeny* bit of mild soap in the past and scrubbed it with a brush then hung it out to dry. I don't soak the pad through (just dampen it and wash the soap off on the underside) and I only do that once in a blue moon (maybe twice in this pad's 7 year life span) and try to do so only on days which aren't crazy humid/rainy. Keep in mind also, it can take a day or two for it to dry out fully. If it doesn't it will be smelly.

Collie Farm got it! I have one pad that is completely 100% felt and will use this technique to get Hamptons hair out. I’ve never washed it though cause I thought that would destroy the pad. I also have one of those pads you find at tractor supply that’s like a rubber on the bottom so the horse can breathe and has a standard colored stitching on top. I figured those were safe to wash thoroughly compared to a felt or wool pad

Where is the link to the scraper?

Take it to the car wash, clip it on the mat clips, use the plain water to flushit thoroughly. Dry in sun. You should curry ypur pad before you put it on each time. If it smells foul, that's too dirty to be on your horses back.

A stiff brush