We've all had the same problems with those red watering cups. The springs stretch and the o-rings fail, leaving the valve stuck open, draining the entire reservoir and leaving your floor and cages soaked. Well with the triggerless water cups you'll never have to deal with quail poop soup on your floor again. The trigger mechanism is built into the body of the cup, so they do not stick open. The weight of the water in the cup seals the valve, so the birds do not have to touch any trigger to create water flow. The cups will always have a small amount in the bottom. Simply drill a 3/8" hole in a bucket or other reservoir, install the silicon gasket, insert the shaft into the hole and tighten the wing nut on the inside.