Titebond 3 wood glue is we have used for years when assembling bee frames and boxes. Titebond 3 is waterproof and is an excellent choice for beekeepers because of its non-toxic formula, incredibly strong adhesion, and easy cleanup formula.
We prefer Titebond 3 over Titebond 2 for beekeeping equipment because the Titebond 3 formula has a longer window to work with before setting and is stronger than Titebond 2 when set.
From the Manufacturer:
Titebond III Ultimate Wood Glue is the first one-part, water cleanup wood glue ever offered that is proven waterproof. The waterproof formula passes the ANSI/HPVA Type I water-resistance specification and offers superior bond strength, longer open assembly time and lower application temperature. Titebond III is non-toxic, solvent-free and cleans up with water - safer to use than traditional waterproof wood glues. It provides strong initial tack, sands easily without softening and is for indirect food contact (cutting boards). The ultimate in wood glues - ideal for both interior and exterior applications.