but then it seemed like they changed their formula and it didn't work as ...
We use to use the old RezBlock (Green stuff), which worked well when we first started to use it, but then it seemed like they changed their formula and it didn't work as well.  Then we saw this new concentrated form, and decided to try it, what a mistake.  It does not work as well as the very original RezBlock.  I still have to rinse our glass products with very hot water to remove the gunk and then soak in Grunge Off, which still works great.  Giving up on the RezBlock and saving our money for the Grunge Off.  I like paying for products that work.
Rating: 2 stars