Product works good, but the big problem is that whatever binder they use in these tabs stains everything purple.

Come on Sams club,it took me 45 minutes just to get the lid off the bucket! What engineer designed that lid!?

I have used this for the past 3 years and have had no problem. Much cheaper than the pool store and works just as well

I would not purchase these. My chlorine level was consistently testing 0 even after having 3 tabs in for days. I had to start adding liquid chlorine. These tabs do not dissolve.

This is the first time we bought members mark tablets for our dispenser and after 2 weeks no chlorine detected. We thought it was our chlorinator but after inspection we found nothing wrong. Will be returning to SAMs,very disappointing.

These were a collossal waste of money. As soon as we put them in our feeder for our inground pool, the water became immediately cloudy. Been fighting with it ever since, and to top it off, they dissolve completely about 3 days...terrible.

i bought these because they were only ones could find with the shortage. i barely get a reading even after doubling up on the amount i usually use.just horrible

I would never buy this product again. They are not slow dissolving and are going thru them quickly. I normal use the Clorox ones but this was a little cheaper you pay for what you get worst buy.

I HAVE HAD TROUBLE SINCE USING THESE . MY CYANURIC ACID LEVELS ARE OUT OF CONTROL . I HAD TO TAKE OUT HALF THE WATER IN MY POOL TWICE SINCE I STARTED USING THESE .

I have been using chlorine tablets from different vendors and they all seem to do their job including the ones from Sam's. However the price went from 80 bucks (my last purchase Oct. 2020) to %100 which is a little steep...