A home remedy for catching house flies is to use a mixture of vinegar and sugar as bait. This will work for almost every kind of household fly.
There are four types of flies that typically show up in homes: Houseflies, flesh flies, cluster flies and blowflies. All of these flies commonly feed on trash and animal fecal matter. At best, they are a nuisance; at worst, they can cause serious health problems.
To create a home flytrap, cut the tops off some plastic water or soda bottles. Invert the tops into the bottom halves of the bottles to form a funnel. Add two or three inches of apple cider vinegar and 1/4 teaspoon sugar into each bottle. The flies will enter and become trapped for easy disposal outdoors.