I keep honey bees and have for years used a common canning jar entrance feeder that uses a suction vapor lock to prevent the sugar syrup feed from leaking.
The standard canning jar entrance feeder is prone to leak. That wastes the food and causes problems with keeping the bees. My invention provides a second pooling lock to prevent leakage in the event the original suction vapor lock fails. The entrance feeder is made in two parts of plastic and still accepts a common canning jar to contain the food.