Mankind has been bothered by flies ever since time began. This has led to the invention of a number of different fly traps or fly catchers.Glass fly traps were popular during the 19th and early 20th centuries. The flies, being attracted by some sweet liquid or other bait in the bottom, were unable to find their way out. This trap has small glass legs enabling it to be used standing on a flat surface such as a table. Most were suspended by wire handles. This is an example of a common domestic item no longer commonly used today.Moulded clear glass fly catcher on small glass legs. Glass stopper. A piece of bait is suspended in the centre and the top opening is covered up with a piece of cloth and a fluid such as kerosene or similar is put in the gutter below the outer part of the dome. The flying insect is drawn inside by entering the underside opening and then, when trying to leave, flies against the glass and then drops into the catching fluid below.fly-catcher pest-control glassware