Water Bobble Hot Tub Oil Scum Absorber - Scum Absorbing Sponge for Spas and Hot Tubs - Naturally Cleaner Water with Spa Sponges for Hot Tubs - Orange Floating Bobble with String- Single Package

Started getting foam in my spa. Tried to get rid of it unsuccessfully until I found this. Dropped it in and a few days later the foam was gone. I only run my spa pump for 30 mins every night but even that was enough. Works great!

Works great! Absorbs oils as advertised.

Saw the idea of this on some Hot Tub pages so I decided to jump on the bandwagon.Worked great. Have no oily residues in the Tub or visible in the water

It is too early for me to say if they really do the job or not. I just installed but it looks like they will work just fine. Im waiting for one to sink to see how much scum it actually trapped. Will update my review at that time. So to be fair i gave a four, not knowing if the product is good or not.

Works as expected. Keeps my hot tub clean. Pricing was similar to local stores but with free shipping.

I used this for a month or so. Water was crystal clear. After a couple of weeks there was a thick blue scum line. I've never had this before in the tub.I removed it cleaned the scum line and the issue is gone.Not sure why but don't need to deal with that.

It is just like the ones we bought from the hot tub dealer and so far it is working just as well. The thing about these is that by looking at it you can't really tell if it is doing anything, but we never have oils floating on the surface, so I guess it is working. What we were told when we bought our hit tub is that as the sponge absorbs oils and smaller particles it will get heavier. Once it is mostly under the water, replace it. Thus us what we have been doing for years. The sponges seem ti last quite a while.We use a skimmer sock on the pre-filter, and of course have a proper pleated filter as well, and treat the water as needed, so it's not like we have gross water anyway, but if someone uses skin lotion etc this is supposed to pick up those oils. We've never been without one, so I haven't compared, but our water stays nice and oil-free, so that probably means it's working.

Does a good job