It’s a traditional way to scare flies away and is used in most of the food markets in urban Mexico. Light is refracted by the water, the colours and movements of the bag are amplified and the fly is confused and flies away.
11 Plants that Repel Flies
11 Plants that Repel Flies - Page 12 of 12 - Bless My Weeds
How to Kill Fleas in the Yard? (Method also works on ticks and mosquitoes) Borax, Pyrethrum, Cedar Chips, and planting tons of rosemary. Scrapping the Diatomaceous earth, I love my pet! ~The Housing Forum~ "Video"