How do you get GSP to attach to a rock? I have had it rubber banded to the rock for about 1 month and they still aren't attached. Do I have to glue them on?
Same here. Dry the rock and the bottom of the mat, then apply a little superglue or LocTite gel (any cyanoacrylate gel) and you're done. IME the GSP will start to spread within a few weeks.
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