Yes and yes. I use the gentle cycle. I couldn't do my bigger 10 and 12 inchers in my washer, just the 8's but the laundromat has the big machine that will do them for me.
I just found my dust shroom filter. I read through this entire thread before realizing I was reading my own question. That was weird. I don't think I ever ended up reusing it and now I'm wanting to use it as a diy air purifier for my new place that's daily dirty
If this works, you are the freaking man. I've even been looking in ATV sites even, trying to figure out how exactly these filters work. Anyway thought I'd share the something crucial about these foam filters that I didn't know. They do NOT work without re-oiling, I guess. The debts freely flies through without the oil. That might have been common sense to some, but not me ha