SCUMBALLS® Oil Absorbing Sponge (2 Pack) – Floating Scum Eliminator for Hot Tubs

Wait a longer before changing water. Very useful.

Does exactly what it’s supposed to do. Leave it alone and simply keep an eye on its dirtiness level. Common sense should tell one to not intentionally squeeze these back into the spa water…gross. Make sure you set it out of the spa if you will have multiple guests; it will keep floating around and will eventually wind up behind someone’s back and get inadvertently smushed. We set it on an unused drinks holder on the spa so we do not forget to throw it back in when done with the spa.

Weird but they do work (to some degree) on the ring that can form around your hot tub. Also can use for some light cleaning while you’re in the tub

I squished one the first time I was in the hot tub and it didn’t go back to its original size at all. That’s why I deducted two stars. But my hot tub does seem like there are less orange bubbles, so I think they work. Just let them float on top and don’t squish, even though that’s fun to do.

These scum balls are the very best quality and definitely hold up. I used these in my pool skimmers and they really make a difference. No more scummy residue around the edges!