ok, so im putting grout on the hide now and im still trying to decide if i want to paint it. The grout is already a brown color so im leaning towards just the grout color. But anyway, after im done putting on the grout im going to need a sealant. I\Any suggestions? And how can i know its non toxic? I looked at lowes a while back and id see some that are water based but none of them said non toxic that i could see.