You can purchase a 32-ounce bottle of Petramax rock glue at Amazon for about $34. If pets and kids will have access to the gravel landscaping area where you use the rock glue, you'll want to pick ...

The Flex Glue Clear is also supposed to be mildew-resistant and shouldn't shrink. We do not have the results to those claims yet. We bought ours on Amazon for a total of $13.99.