They are not.
There is a common myth that a plastic bag filled with water will repel flies. This has been tested and there is ZERO evidence that it works. In fact, in one test the bag actually increased the number of flies present.
Flies have good eyes, as they are compound. When they see the bags, their internal predator alerts go off: the water bags look like pond water. Generally when frogs want to catch a fly they hide under pond water.....
Hanging bags of water are believed to deter flies due to the way light refracts through the water, which can confuse and disorient them. The shimmering surface creates a visual effect that is thought to be unappealing to flies, making them avoid the area. Additionally, some theories suggest that the reflections mimic the presence of predators or other insects, further discouraging flies from approaching. However, scientific evidence supporting this method's effectiveness is limited.
yes a bag of water does keep files away as along as it is a clear bag.
No shadow the hedgeog is not afraid of water he can swim, But sonic is afraid of water because unlike shadow he cannot swim.
There has been no scientific study to prove if zip lock bags filled with water and penny's will keep flies away. There are some people who swear it works and others who swear it doesn't work.
Bags of water do not effectively keep mosquitoes away.
the beastie
Another incomplete question. It depends entirely on the density of either the contents of the bags, or of the bags the bags themselves if the bags are empty. If the bags contain water, then as there are 1000kg of water in 1 cubic metre there would be 20 X 50kg bags.
He is afraid of water because when he was younger, he almost drowned. Wouldn't you be afraid of something too if it almsot killed you?
wolves can't really be afraid of water considering they drink it
They are not afraid of water, it makes them look silly,and it wastes energy. (there)
Yellow labs are not afraid of water they love water!!!