Sani Flush toilet bowl cleaner consisted of cleaning crystals. Those cleaning crystals were composed of Sodium Bisulfate and a smaller amount of sodium carbonate. This was a very popular item, but was recalled in 2009 due to environmental and health concerns. There is some hope that this item will be reformulated and released again, by the previous manufacturer Reckitt Benckiser.

The cleaning crystals were considered to be very effective. As with any chemical, it was vital to have kept it away from children and not to have used it in an unventilated area. The smell was neglible, to those who noticed it at all.

Prior to the recall, and for a brief period of time after, it was easy to access this item. It was available for a minimal cost, from many local retailers, as well as some online sources. The reasons affecting the recall were vast and varied. There were claims that it contributed to asthma, as well as some concerns that when it was disposed from the toilet, it affected the environment in an adverse way.

Following the recall, there was an almost black market of sorts, that resulted in the sale of this item at exorbitant prices. Many people who were used to being able to pour it into a dirty toilet, wait for bubbles to form, and scrub briefly at the stain, were willing to pay a high price for the privilege of doing so.

At that time, there were many questions that were posted online, by confused customers looking for this item. Numerous blogs questioned why there was so little information being made available to the public, and why it has been removed from the shelves. There were store employees who removed this item from the shelves, with no clear knowledge of why it was necessary to do so.

Fans of this cleaning agent had previously been able to purchase it in several different sizes. Additionally, it was easy to see that the company had, at least at one point, attempted to conform to safety standards. It was phosphate free, and as one might hope, safe for both septic tanks and plumbing.