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A mouse
Rats are the main natural enemies of the otters and often consume large amounts of leeches. In particular, the otters are swallowed by the rats due to their loss of defensive ability when they are on the shore.
Control methods
Method one: Seal the culture pond, reinforce the facilities for preventing escape and prevent the rats from entering.
Method 2: Sprinkle rat poison around the pond, trap rats, and install an electric mouse trap.
Method 3: Cats can be kept because cats do not eat blisters.
Second, ants
The reason why ants appear is that the smell of bait is introduced or brought into the soil. Ants mainly harm the species of leeches and eggs that are spawning.
Control methods
Method one: soil disinfection. Use high temperature or sun exposure, or use 100 poison to kill ant eggs.
Method 2: Anti-escape nets, such as trichlorfon, etc.
Method 3: Mix the chlordane powder with the clay outside the escape prevention mesh to prevent ants from entering.
Three, snakes and otters
Snakes and otters can sometimes swallow leeches.
The prevention and control method uses sticks and nets to remove the snakes from the pond, strengthen the prevention and escape the net, and prevent snakes from entering. Install iron nets and nylon nets at the water inlets to prevent water blisters from entering the pond with water.
The control of natural enemies of otter
The natural enemies of the otter mainly include mice, snakes, ants, otters and other animals.