A standard wire minnow trap, the cylindrical kind with funnel openings on each end, is one of the most effective and affordable tools for catching snakes alive. Wildlife researchers have used them for decades to survey snake populations, and homeowners use them to relocate unwanted snakes from yards and gardens. With a few modifications and the right placement, a cheap minnow trap can outperform purpose-built snake traps.
Why Minnow Traps Work for Snakes
Minnow traps work on the same principle as any funnel trap: the animal pushes through a narrow opening to get inside but can’t easily find its way back out. The funnel openings on a standard minnow trap are typically 1 to 2 inches in diameter, which is a comfortable size for small to medium snakes like garter snakes, ring-necked snakes, rat snakes, and water snakes. Larger species can push through surprisingly tight openings because their bodies are flexible and scaleless on the belly side.
Double-ended funnel traps, the kind with openings on both ends, catch roughly twice as many large snakes as single-ended versions. Research from the USDA Forest Service found that double-ended funnels were statistically more effective for capturing large snakes, likely because the snake has two chances to enter regardless of which direction it approaches from. If you’re buying a minnow trap specifically for snakes, choose one with funnels on both ends.
Modifications That Increase Catch Rates
An unmodified minnow trap will catch snakes, but a couple of simple tweaks can dramatically improve your results. A U.S. Geological Survey study on aquatic funnel traps found that adding a one-way valve made from cable ties to the small funnel opening increased capture rates by more than five times compared to unmodified traps. The valve lets the snake push through but blocks it from backing out.
To make this valve, zip-tie several cable ties around the inside rim of the funnel opening so they point inward like flexible fingers. The snake pushes past them to enter, and the ties spring back into place behind it. You can also extend the wide end of each funnel with a collar of hardware cloth, which creates a more gradual slope that guides the snake toward the opening. Both modifications work across different habitat types and catch snakes of all sizes equally well.
Baiting the Trap
Snakes hunt by scent and sight, so the best approach combines a scent lure with a visible prey item. Live bait like a small frog, lizard, or a few crickets inside the trap gives a passing snake a visual reason to enter. Place the bait in a small mesh bag or container inside the trap so the snake stays motivated to push through the funnel rather than grabbing the prey from outside.
Commercial snake lures are available and work as a scent attractant. Apply four or five drops on a cotton ball and place it inside the trap, refreshing weekly to keep the scent active. Hen’s eggs also work well for egg-eating species like rat snakes and kingsnakes. Combining a scent lure with a visible food source gives you the best odds, since the scent draws the snake from a distance and the prey item convinces it to enter.
Placement on Land
Where you put the trap matters more than what’s inside it. Snakes travel along edges: foundation walls, fence lines, garden borders, rock walls, and the margins between mowed lawn and tall vegetation. Place the trap flat on the ground with the funnel openings aligned parallel to the edge the snake is traveling along, so it naturally enters as it moves.
For much better results, pair the trap with a drift fence. This is simply a short barrier that guides a traveling snake toward the trap entrance. A piece of aluminum flashing, a plywood board, or even a rolled-out section of landscape fabric works. Bury the bottom edge 1 to 2 inches into the soil so the snake can’t crawl under it. Wildlife researchers use drift fences about 2 feet tall and several yards long arranged in an L-shape, with funnel traps placed on both sides of each fence section. You don’t need anything that elaborate at home. Even a 3-to-4-foot length of board leaning against a wall with a trap at each end will funnel snakes effectively.
Keep the trap shaded. Direct sunlight can overheat a trapped snake quickly, especially in summer. Tuck it under a bush, against a shaded wall, or cover it with a piece of plywood propped up to allow airflow.
Placement in Water
Minnow traps are especially effective for water snakes and garter snakes that forage along pond edges, ditches, and stream banks. Set the trap in shallow water along the shoreline where you’ve seen snake activity. The critical safety step is making sure part of the trap stays above the waterline so a captured snake can breathe. Snakes are not fish. They will drown if fully submerged for too long.
Attach a small float (a sealed water bottle or a piece of pool noodle) to one end of the trap, or wedge the trap at an angle against the bank so the upper portion stays dry. Secure it with a stake or tie it to something solid so rising water or current can’t pull it under.
How Often to Check the Trap
Check your trap at least once every 24 hours, ideally in the morning before temperatures climb. Federal wildlife protocols for live snake trapping call for daily checks at minimum. A snake trapped in a hot, exposed location can die from heat stress or dehydration in a matter of hours on a warm day. If you’re trapping during a heat wave or in direct sun, check twice a day. If you can’t commit to daily checks, pull the trap until you can.
A damp sponge or small water dish inside the trap helps prevent dehydration, especially for land-based setups. For aquatic traps, dehydration is less of a concern, but drowning is. Make sure that air pocket stays accessible.
Legal Considerations
Snake trapping is regulated differently in every state, and the rules are often stricter than people expect. In New York, for example, trapping a snake even on your own property requires a permit from the state wildlife agency, whether the snake is a nuisance or damaging property. Many states classify snakes as protected wildlife, and “taking” a snake, which legally includes capturing or trapping, without authorization can result in fines.
Relocating a trapped snake off your property is illegal in many states, even with good intentions. Moving wildlife can spread disease and stress the animal. Some states require you to release the snake on the same property where it was caught, while others require a licensed nuisance wildlife control operator to handle the removal.
Before setting a trap, check your state wildlife agency’s website for the rules that apply to snakes specifically. Endangered and threatened species have additional protections. If you accidentally trap a protected species, release it immediately at the capture site.
What to Expect When You Catch One
When you find a snake in the trap, move calmly. Carry the whole trap to your release spot rather than trying to extract the snake by hand. To release, simply open one end of the trap and set it on the ground with the opening facing away from you. The snake will leave on its own within a few minutes. If it’s reluctant, gently tilt the trap so gravity helps.
If you’re not comfortable identifying the species, take a photo from a safe distance before releasing and post it to a local herpetology group or use a wildlife identification app. Knowing what species are on your property helps you decide whether further trapping is necessary or whether you’re dealing with a beneficial species you’d rather leave alone. Most snakes found around homes are nonvenomous and actively reduce rodent and insect populations.