An outside shaft is in flow connection with a drainage pipe via a bell lock, which has an upright pipe opening out into a drainpipe joint socket on the shaft. A direct flow connection can be established between the shaft interior and the pipe socket, esp. in a kitchen floor. The ...
If the source of gnats in your kitchen is your kitchen sink drain then this is the method that you should go for. Pour around 200 – 230 ml of ammonia inside your drain. This will damage the breathing tubes of the larvae and kill the adult ones. As ammonia is toxic to humans, so ...