It freaking works!!
I had tiles in my upstairs laundry room break out the grout due to movement. I squirted this stuff into the areas where the grout was already missing and worked it under the tiles by pushing up and down on them to “suck” the glue under them. I then put 25lbs weight plates from my gym on the tiles for 24 hours. They are now very solid and ready for new grout!! Highly recommend.
Rating: 5 stars