For smooth surfaces, ensure the surface is completely dry and free of loose material. Turn the nozzle to the spray position. Hold the sprayer about 3-4 inches above the inclined surface (>30°) and apply a thin, even coating. Allow the surface to fully dry. Reapply as needed.
For non-smooth surfaces like wood, use the included aluminum tape (packing tape or metallic tape will also work for larger areas) to create a border around your bee house. Follow the above instructions to apply AntCant on the tape.