I like to paint the edge's of my box's for protection from water and rotting but the latex paints these days never seem to dry . Someone mentioned coating the edge with paraffin wax but won't that get soft and sticky in the sun , any other ideas .
I agree. I use the cheapest petroleum jelly I can find. It doesn't wash away if it gets wet, and if it's safe for us, it's good enough for the bees.Try vaseline petroleum jelly.