Really works!
I will do DIY to save money and learn along the way. I tiled our bathroom floor and for the most part there's been no issues except for one area where we installed the vanity. The adhesive wasn't set enough and the weight of the vanity jiggled it loose. The grout would crack and you'd hear it creak. But with the vanity leg over part of it, it would be impossible to remove the tile and redo it. This solves that problem. Now it's fixed and not moving.<br /><br />The reason I didn't give 5 stars is because the glue was dried out at the base of the nozzle and wouldn't come out.  When I squeezed, it came out back of the caulk gun and was a bit messy. I ended up finding a thin enough drill bit and was able to drill through the hardened glue and was back in business. Thankfully I could cut off enough of the tip so my bit could fit and reach the hardened part.
Rating: 4 stars