What are leeches afraid of? Teach you how to quickly get rid of them

Well water in rural wells is generally obtained through filtration and seepage. As long as the water source and soil are not polluted, the water is usually relatively pure. But if leeches appear, that means there is a problem with the water quality. So what are leeches afraid of? How to quickly get rid of them?

I. Introduction to leeches:

1. How big can a leech grow?

The breeding cycle of leeches is relatively long, generally 1.5 years per cycle. The largest leeches can weigh about 65g, and the average weight is also around 35-50g.

2. What do leeches eat?

Leeches are omnivorous animals that mainly feed on animal blood and body fluids. Plankton and insects in the water are their main food sources. Artificial breeding also requires feeding some animal organs, compound feed, snails, plant residues, earthworms, cooked egg yolks and other bait.

Generally, wild leeches mainly suck the blood of frogs. For artificially bred Japanese medical leeches and Poecilobdella manillensis, animal blood clots are fed. To ensure balanced nutrition, plankton and large amounts of water hyacinth, duckweed and other aquatic plants need to be cultivated in the water to provide feeding, shade, habitat and egg-laying sites for the leeches. In addition, snails should be fed into the pond at a ratio of 50kg/mu.

II. What are leeches afraid of?

Leeches are afraid of salt. After salt is sprinkled on them, the salt forms a high-concentration salt solution with their body fluids. The high-concentration salt solution causes them to contract in a stress response, prompting their internal body fluids to seep out, leading to dehydration and death. So, if you are bitten by a leech in the wild, do not panic. Drop high-concentration salt water onto the leech, and it will soon release its suckers, fall off and die from water loss.

There are many animals that can eliminate leeches, such as crayfish, fish, rice field eels, rodents and dragonfly larvae, as well as snakes such as cobras. Frogs also eat leeches thanks to their powerful stomachs, and some water birds also eat leeches, such as cranes.

III. How to quickly get rid of leeches in a well?

1. Leeches are very afraid of salt and alkali. When they encounter salt or alkali, the epidermal mucous membrane of the leech quickly falls off, and before long it dies from water loss. When you catch a leech, throw it into a large container filled with salt or alkali and burn it to death.

2. Based on the water storage volume in the well, calculate the normal usage amount of disinfectant (bleaching powder or bleaching powder concentrate). Then, put 2 to 3 times the normal usage amount of disinfectant into a basin, add a small amount of water, stir evenly and pour it into the well water. Cover the well and seal it for 1 hour. The leeches on the well walls and in the well water can then be killed.

3. Generally, farmhouse wells are relatively small and the well bottom is relatively shallow, so an appropriate amount of table salt or lime or bleaching powder can be put in, or the three can be mixed together and put in. If there is a lot of well water, table salt or lime or bleaching powder may not be enough to kill the leeches, but they will stimulate the leeches to detach from the well walls. In this way, the well water can be pumped dry and the sludge at the bottom of the well removed. Then put some bleaching powder tablets into the well bottom to kill the leeches and other pathogens, and thoroughly clean the well bottom. The pumped-out well water and sludge should be placed far away from the well mouth and treated in a centralized manner.

4. If the well water source is found to be water from nearby paddy fields or fish ponds, soil can be dug around the outer wall of the well to expose the outer wall, and cement can be used to fill the seams and plastic film can be applied (use polyethylene, not polyvinyl chloride, because the latter is toxic), then backfill with new soil, not old soil.