Torula yeast tablet that easily dissolves in water. For use in the trapping of Olive Fruit Fly. Place 3-4 tablets in the McPhail trap and fill with water to the line. The flies are attracted into the trap and drown. Replace the yeast tablets monthly. Make sure to add water as it evaporates when the weather is warm. You can also make your own traps by using a 1 - 2 liter plastic bottle. Drill or melt 5 mm holes around the top. Use 3-4 yeast tablets per liter of water. Flies attracted to the bait crawl in the holes and then drown. Replace the solution monthly.  Some tablets may become broken in transport, these are still usable.