These are the only bleach tabs that I have found to work in my toilet to keep the black rings away

These work great and the price is right

I have used these for years. I barely have to clean between tablets.

Keeps toilet fresh between regular cleanings. A must for ostomy patients

Keep toilet clean for about 30 days.

Keep your toilet bowl, clean and smelling fresh

My mom has used these toilet tablets for years, so I pick them up for her at Sam's Club..

Clean easy to use smells good

I ordered two boxes and half of the pucks were broken

These are awesome for Florida warm water that stays in toilet tanks. Keeps everything fresh!