Mine doesn’t. I use the cups and change out the floss every couple of days. I do have a little strainer basket I found at the dollar store that kind of hangs/sits over the sump and I put the dirty floss in it and let the water drain out slowly before I throw it away
Might have to give this a try. When I bought new filter socks I just rinsed them in water and put it in. My skimmer went crazy and overflowed. Soaking them in bleach over night solved that issue. If I dont have to bleach the floss and just simply change them out, it'd definitely be worth it.