Had this generic dollar store bathroom cleaner with bleach and it got a lot of the ring off but you can still slightly see the ring. While there are many commercial cleaning products that can remove hard water stains in the toilet, several household products can be just as effective and will rid your bowl of the dreaded ring without harsh chemicals. I came across this page by searching on how to get rid of toilet bowl rings.
If you already have rings around the toilet bowl, a couple of popular types of products may just disappoint. Fortunately, these eyesores-usually caused by hard water-can be easily (and inexpensively). How to Clean a Ring in Toilet Bowl.
Toilet bowl rings are the result of hard water and mineral deposits that develop from standing water in the bowl or from the toilet not being flushed multiple times during the day. No matter how hard you try to keep your toilet clean, your porcelain throne may end up with unsightly rings.