Basically, cut an empty water bottle in half, turn the nozzle part upside down and insert it into the bottom half. Throw in some yummy goodies like old moldy beef and let the fun begin! Flies check in, but they don’t check out.
Not that I’m terribly bothered with flies all the time, but this looks like a fun little project when I start spending more time outside. Grilling out has a way of attracting flies and so does just relaxing on the deck. However, when I’m out on the boat, horseflies will descend like vultures. So hanging one of these off the starboard bow might be just what the doctor ordered.
Make an inexpensive and efficient fly trap by recycling plastic drink bottles. This is great for domestic flys, blow flys and fruit flys.
1.5 to 2 litre (3-4 pint) plastic bottles are ideal. It can vary up or down in size. If any black bases that are often on the larger plastic bottles, remove these.
You will require either scissors, a hacksaw or sharp knife and some electric tape or plastic glue.