My driveway has a few separate slabs (is this the right terminology?) and an animal has been digging in the gaps between two slabs. The gap is 1 - 1.5" wide. It looks like the rain is washing away the sand/dirt beneath because I can see open area.
What's my best course of action? I was planning on trying to fill the gaps with sand as best I could through the gap, and then seal the gap with something. Do I want to use something like a caulk or something more like a tar? Links would be great!