These are as good as the name brand
These are a necessity in my home.  We have hard water and it makes rings on the toilet.  We have septic so cannot use bleach.  Nothing gets the ring of except pumice.  I bought these after I received a gift of a name brand pumice that worked to get the ring off.  It is not perfect, but nothing else comes close.  I recommend these for sure.
Rating: 4 stars