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Specific Predator Control | Learning Center

Now that we learned the basics of predator control, here are some specifics about each nuisance pest.

Geese
Geese have several natural enemies including swans, alligators and coyotes. Using one, a pair or all three of these decoy methods will help to ensure your pond (and the surrounding area) stays geese free all season long.

  • Swans and geese make similar nesting areas (like your pond). Swans are very territorial and aggressive towards geese. Geese will see the swan decoy and fly over to find a less inhabited water body.
  • Using alligator decoys is also an effective method for geese control. An alligator decoy is effective in areas where alligators do not live; the fear of alligators is instinctive, not learned.
  • Geese do not like coyotes. The Coyote Decoy’s 3D build makes it visible from all angles making it superior to silhouette cut outs, not to mention its tail and body will move with the least amount of wind. This movement can be spotted by pesky birds from a great distance away. Nesting birds and other rodents will not want to seek refuge anywhere near your property if they spot this lurking predator in the open!

Blue Heron
Blue Herons compete against their own breed for pond real estate. A blue heron decoy will deter a real heron from landing due to their territorial nature. Just be aware that late April to May (sometimes early June) is mating season. If used too early, your blue heron decoy may attract a heron searching for a mate.

Muskrats
Muskrats can be cute at first as they frolic and play in your water, but beware you likely have a bigger problem than you think. Muskrats wreak havoc on your shoreline by digging tunnels around your pond to the den causing unstable ground. Here are tips to remove them from your pond:

  • Disrupt their diet. Muskrats are mostly vegetarians, eating aquatic vegetation such as cattails, grasses and pond weeds. Although, you may see them munching on snails, crayfish small fish and frogs in some areas. Removing vegetation in and around your pond is a sure way to limit a muskrat’s access to food.
  • Disrupt their environment. Muskrats prefer shallow ponds with still or slow-moving water. Adding an aeration system or fountain will provide circulation and, in most cases, enough wave movement to deter muskrats. You’ll get a cleaner pond out of it too!
  • Remove them from the pond. Muskrats can caught using a live trap baited with apples or other fruits and vegetables. Make sure you do not fully submerge the trap in case other wildlife accidentally becomes trapped. Monitor your traps several times per day. Check with your local DNR to determine rules involving relocating these pests.

Once you’ve trapped and released your muskrats, make sure you cave in their tunnels and den. You may need to backfill these spots with additional dirt or gravel.

Leeches
Leeches can be quite the nuisance pest in a swimming pond, but, thankfully, they do not do much harm. Leeches can be found in most ponds but a healthy fish population can keep their population in check. Redear Sunfish do a great job eating leeches out of their mucky habitat.

If you do not have fish, there are some prevention and removal techniques we can share with you.

  1. Control the muck. Mucky areas are a breeding ground for leeches. Rake out as much muck as possible and use MuckAway to reduce muck by up to 5” per year.
  2. Remove weeds and debris. You have the muck under control but what about weed growth? Another hot spot for leeches is among weeds and debris. Raking out weeds and any decaying dead weeds from shallow waters will also keep your leech population in check.
  3. Add fish. Redear Sunfish and Largemouth Bass will help to reduce the overall leech population.
  4. Set a leech trap. Punch leech-size holes in a coffee or aluminum can, bait it with raw chicken or fish and position it in a shallow area of your pond. When the worms go for the grub, they can get in – but not out. The burrs from the whole punch will prevent them from escaping. Remove the can once it’s full and repeat until the leeches are gone.

After getting out of my swimming pond, I had a leech on my leg! How do I remove leeches from my pond? | Ponds & Lakes Q&A

Q: After getting out of my swimming pond, I had a leech on my leg! How do I remove leeches from my pond?

Q: After getting out of my swimming pond, I had a leech on my leg! How do I remove leeches from my pond?

Dennis – Blythewood, SC

A: There’s nothing like climbing out of your pond and finding one (or more!) of these little blood suckers stuck to your leg. What are they, and how do you banish them from your pond?

Getting to Know Leeches

Leeches are 2-inch-long brownish-black segmented worms that are a distant cousin to the earthworm. They use their suction cup-like mouths and teeth to latch on to vertebrate and invertebrate animals, feeding on their blood. Of the 700 different leech species, the majority live in freshwater environments, like your swimming pond.

Leeches love to live in the debris at the bottom of your pond. In all that muck accumulation, they get comfortable, find food and hide from predators—also known as fish—swimming overhead.

Despite their bad reputation, leeches aren’t all bad. Up until the 18th and 19th centuries, these worms had been used medicinally on humans to improve and restore blood circulation. The practice waned for a time—likely a combination of the yuck factor and modern medicine—but it’s slowing coming back into favor. In fact, Emma Parker Bowles (daughter of Camilla, Duchess of Cornwall) recently wrote about how leeches helped relieve her of debilitating migraines.

Kicking Leeches to the Curb

Unless you practice leech therapy, you probably want to evict those invertebrates from your pond. The best way to do that is to remove their preferred habitat—all the muck and debris covering the bottom of your pond. How do you do that? Here’s a four-step approach:

1. Pull Out the Debris: First, use a lake rake, like the Pond Logic® Pond & Beach Rake, to remove weeds, accumulated debris, algae, decomposing plants and muck.

2. Add Beneficial Bacteria: Next, add some beneficial bacteria, like those found in MuckAway™. The bacteria will head to the bottom of the pond and digest whatever muck remains. Remember that it will take some time to break down all that debris, so be patient.

3. Let Your Fish Do the Work: With nowhere to hide, those leeches will become tasty meals for your fish. You may even consider adding some more leech-eating fish to your pond.

4. Trap and Destroy: For those leeches that elude your finned friends, you can trap and remove them with a baited trap. Punch leech-size holes in a coffee or aluminum can, bait it with raw chicken or fish heads, and position it in a shallow area of your pond. When the worms go for the grub, they can get in but not out because the burrs from the hole punches will prevent them from escaping. Remove the can once it’s full and repeat until the leeches are gone.

If a leech latches onto you, don’t worry. In most cases, it won’t do any harm. In fact, you might not even feel it as the tiny critter injects the spot with anesthetic-anticoagulant combo while attaching itself with its suckers. You can remove a leech by breaking its suction seal with your fingernail or another blunt object, causing the worm to detach its jaws.

Pond Talk: Do you have any leech-removal tips to share?

Reduce Mucky Pond & Lake Bottoms - Pond Logic® MuckAway™

My pond has leeches! How do I get rid of them? | Ponds & Lakes Q&A

Q: My pond has leeches! How do I get rid of them?

Tana – West Allis, WI

A: Leeches. They’re not for the squeamish. These little bloodsuckers – which are actually segmented worms related to earthworms – use their suction cup-like mouths and teeth to latch on to vertebrate and invertebrate animals, feeding on their blood.

The majority of leeches thrive in freshwater environments, though some species can be found on land and in the sea, too. Of the 700 different species of leeches, 100 are marine, 90 are terrestrial and the remaining 510 prefer habitats like your lake or pond.

One of the more common leeches found in North America is the Freshwater Leech or North American Leech. This brownish-green worm with black and red spots grows to about 2 inches long and lives in lakes, marshes and slow-moving streams.

Harmless – and Healthy

Historically, leeches have been used medicinally on humans to improve and restore blood circulation. The practice of leeching, or leech therapy, can be traced to India and Greece and has been done in both Europe and North America up until the 18th and 19th centuries. Though the practice waned for a time – likely a combination of the yuck factor and modern medicine – it’s slowing coming back into favor.

If a leech latches onto you, don’t worry. In most cases, it won’t do any harm. In fact, you might not even feel it as the tiny critter injects the spot with anesthetic-anticoagulant combo while attaching itself with its suckers. You can remove a leech by breaking its suction seal with your fingernail or another blunt object, causing the worm to detach its jaws.

Tiny Hitchhikers

The leeches in your pond have probably hitched a ride from visiting birds or plants that you’ve purchased and placed in your pond. Leeches will attach themselves to their host – like a duck or heron – and take in their fill of blood. Once they’re satiated, they’ll drop off and establish themselves in their new home. Leeches will also hide in plant roots and on the bottom of pots, and when you place them in your lake, they’ll happily move right in.

Fish Food

Fish love to gobble down leeches. A healthy fish population will, in most cases, keep leech numbers under control. Among game and lake fish, red ear sunfish do a great job of eating these worms. Other natural leech predators include turtles, crayfish and water fowl.

Prevention, Removal

Besides using your finned friends to control the leeches in your lake or pond, you can also try some of these recommendations:

•Control the muck on the bottom of your pond – which is where they lay their eggs and spend their off time – with a product like MuckAway™.
•Remove debris, cattails and phragmites from shallow areas of your pond.
•Add more leech-eating fish.
•Set a leech trap. Punch leech-size holes in a coffee or aluminum can, bait it with raw chicken and position it in a shallow area of your pond. When the worms go for the grub, they can get in – but not out. The burrs from the whole punch will prevent them from escaping. Remove the can once it’s full and repeat until the leeches are gone.

Pond Talk: What did you do the first time you found a leech locked onto your leg?

Pond Logic MuckAway - Eliminate Muck Naturally

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