sump baffling

[Lampshade]

I haven't used that one exactly. I've used GE silicone 1, it's at home depot, $4 for a tube. The home depot by my house sells it in a squeeze tube aswell(like a toothpaste tube). I've seen at the one by my house, but couldn't find it at another home depot, so might only be some stores. Both carried the caulking gun sizes tube though, and for $4 you can't go wrong.