Yes, I removed the filters and let them float around during the purge, then I sprayed each perforation of the filter with water on both and then soaked them for a few hours in some filter cleaner. It was a brand new tub that was 9 months old. I was so impressed with ahh-some but alas it was a long day of cleaning so I only did the purge once. I will do it again for sure the next time I drain the tub. Possibly twice. Here's a pic of the purge.