Can someone please explain...

[Aquattro]

I use the stick with the two parts. I cut off a slice with a knife, knead it until it's all mixed, create a roll about 1.5 inches long, wrap it around the base of the frag and stuff it into a crevice or hole. It isn't supposed to be sticky and stick things to flat surfaces, it fills th espace around the hole you put the frag in and hardens in place, locking the frag in. It isn't glue. It's filler.
I just mounted 16 frags without an issue in about 10 minutes. I love this stuff.

tip. Keep your fingers wet when your kneading it, it won't stick to you that way.