10 Ways to Make Your Yard Less Inviting to Snakes
You cannot make a yard snake-proof. You can make it a place snakes pass through instead of moving into, and the work is mostly ordinary tidying done with a purpose.
A snake in the yard is not there by accident, and it is not there for you. It is looking for a meal, a hiding place, or a spot with the right temperature. Take those things away and it has no reason to stay.
That is the whole principle behind snake control, and it is why the methods that work look so plain. There is no spray, powder or gadget that keeps snakes out. There is only habitat. A yard with short grass, open ground, no rodents and a tight house offers a snake nothing, and it will move on to a yard that offers more.
It helps to keep the matter in proportion. Most snakes in American gardens are harmless: garter snakes, rat snakes, racers, brown snakes and king snakes. They eat slugs, mice, rats and, in the case of king snakes, other snakes including venomous ones. Many gardeners are glad to have them.
If you would prefer not to meet snakes at close range, or if you live where copperheads or rattlesnakes are common and have children or dogs, these ten steps make a real difference. They are listed roughly in order of effort, from the lawn mower to the fence.
Read all the way to the end. The last tip will save you money.
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Lawn
1. Keep the grass short
Have you tried this?Mow regularly and keep the lawn at about three inches or lower. Trim along fences, walls, sheds and the edges of beds, where a mower misses and a strip of long grass forms a hidden corridor.
Snakes are prey as well as predators. Hawks, owls, herons, raccoons and cats all eat them, and a snake crossing a mown lawn is exposed from every direction. It will cross open ground when it must, but it will not linger there, and it will not hunt there.
AdvertisementLong grass reverses all of that. It hides the snake, holds moisture, and shelters the voles, mice, frogs and insects that snakes come to eat. A neglected strip along the back fence is often the single most attractive feature in a yard.
If your property backs onto woods, a field or a creek, mow a buffer strip ten feet wide or more along that boundary. Snakes arriving from wild ground meet open lawn first, and many turn back.
AdvertisementWhy it worksA snake on short grass feels exposed and keeps moving. Short grass also lets you see what is there before your foot or hand arrives. -
Clutter
2. Clear woodpiles and debris
Have you tried this?Walk the yard and look for anything lying flat on the ground with a gap beneath it. Stacked lumber, sheets of plywood or roofing metal, old tarps, piles of rock or brick, brush heaps, unused planters and flattened cardboard are all ideal snake shelter. They are warm, dark and tight, and they attract mice.
AdvertisementGet rid of what you do not need. Store the rest off the ground. Firewood belongs on a rack that holds it at least twelve inches above the soil, placed twenty feet or more from the house. Stack it neatly so there are few large cavities.
Take care when you do the clearing, because this is when people meet the snakes that were already living there. Wear leather gloves, long pants and boots. Lift boards and sheets by the far edge so they tilt up toward you like a shield, and move brush with a rake.
AdvertisementAnything that lies flat on the ground for a season becomes a roof, and something will move in under it.
Why it worksSnakes need tight, dark cover to rest, shed and regulate their temperature. A yard without it is only a place to pass through. -
Food
3. Deal with rodents
Have you tried this?For rat snakes, copperheads, rattlesnakes and many other species, mice and rats are the main course. A snake follows scent trails, and a property with a steady rodent population will be found and revisited.
AdvertisementStart with food. Keep pet food, birdseed, chicken feed and grass seed in metal cans with tight lids. Do not leave pet bowls outside overnight. Use trash cans with secure lids, pick up fallen fruit, and keep the compost in a closed bin.
Then deal with the rodents that are already present, using snap traps set along walls and in sheds. Avoid glue boards outdoors and in garages, because they catch snakes, lizards and songbirds, and avoid poison baits where you can. A poisoned mouse may be eaten by an owl, a hawk, a neighbor's cat or a harmless snake, all of which were helping you.
AdvertisementWhy it worksRemove the rodents and you remove the strongest reason a snake has to enter the yard, the shed or the crawl space. -
Food
4. Rethink the bird feeder
Have you tried this?A bird feeder is a rodent feeder on a pole. Birds scatter seed as they eat, the seed falls to the ground, and mice, rats and chipmunks collect it after dark. Snakes then follow the rodents. Some species, such as rat snakes, also climb well and take eggs and nestlings from nearby boxes.
AdvertisementYou do not have to give up feeding birds. Fit a seed-catching tray under the feeder. Choose hulled or no-waste seed blends so less is dropped. Rake up or sweep spilled seed every few days.
Move the feeder at least twenty to thirty feet from the house, over a patch of open, closely mown lawn or bare ground instead of a planted bed. In late spring and summer, when natural food is plentiful and snakes are most active, consider taking feeders down for a few months.
AdvertisementWhy it worksSpilled seed feeds mice, and mice bring snakes. Keeping seed off the ground breaks the chain at its first link. -
Planting
5. Trim shrubs up from the ground
Have you tried this?Dense shrubs with branches that sweep the soil create a shaded, hidden space at ground level, and it is often right beside a path or doorstep. Low junipers, overgrown azaleas, pampas grass and thick beds of ivy, liriope or pachysandra are common examples.
AdvertisementPrune the lower branches so that the bottom six to twelve inches of each shrub is open and you can see the soil beneath. Thin ground covers near walkways, or replace them with plants that grow in separate clumps. Keep all planting at least two to three feet back from the foundation, so there is a clear, visible strip against the house.
Do the same along fences. A vine-covered chain-link fence with weeds at its foot is a sheltered highway from one yard to the next.
AdvertisementWhy it worksOpen ground beneath shrubs takes away the cover snakes rely on, and it lets you see a snake before you reach in to weed or prune. -
House
6. Seal gaps
Have you tried this?A snake that enters a house, garage or crawl space is following a rodent trail or seeking a cool, stable shelter. It can pass through a surprisingly small opening. A young snake needs only a gap of about a quarter inch, roughly the thickness of a pencil.
AdvertisementCheck the weak points one by one. Fit door sweeps to exterior doors and a rubber seal along the bottom of the garage door, and replace them when they crack. Seal around pipes, cables and air-conditioning lines with caulk or expanding foam. Repair cracks in the foundation with mortar. Cover crawl space vents, weep holes, dryer vents and the gaps beneath decks and steps with quarter-inch galvanized hardware cloth.
Look higher, too. Rat snakes climb brick, siding and downspouts, and they enter attics through gaps at the roofline. Trim tree limbs back from the roof.
AdvertisementDo this work in the cooler months if possible, and make sure nothing is already inside before you close the last opening.
Why it worksA snake cannot gnaw or dig its way in. It uses holes that already exist, so every gap you close is closed for good. -
Water
7. Fix leaks and standing water
Have you tried this?Many of the snakes that visit gardens are after frogs, toads, slugs and earthworms, not mice. Garter snakes, ribbon snakes and water snakes are the usual examples. Their prey needs damp ground, so anything that keeps a corner of the yard wet will draw them.
AdvertisementRepair dripping outdoor faucets and leaking hoses. Adjust sprinklers so they do not flood beds or run every day, and water in the morning so the surface dries by evening. Fill low spots where puddles last for days. Empty saucers, buckets and unused pots.
Ornamental ponds are a special case. A pond with frogs and fish will attract snakes, and there is no way to prevent it entirely. Keep the edges open, with mown grass or stone set tightly in mortar, and avoid loose rock borders and dense marginal planting on the side nearest the house.
AdvertisementAir-conditioner condensate lines and downspouts deserve a look as well. Each one creates a small, permanently damp patch beside the foundation. Extend them so the water runs out onto open lawn or into a drain.
Why it worksDry ground means fewer frogs, slugs and worms, and fewer of the snakes that hunt them. -
Mulch
8. Choose it carefully
Have you tried this?Mulch is good for plants and, laid thickly, good for snakes. A deep layer of pine straw, bark nuggets or leaf litter stays cool and moist underneath, harbors insects and small rodents, and lets a small snake vanish completely. Copperheads and pygmy rattlesnakes in particular rest hidden in leaf litter and pine straw.
AdvertisementKeep mulch to a depth of two to three inches, and use a fine, shredded material that packs down and leaves no cavities. Pull it back a few inches from the foundation.
Avoid borders and beds made of large, loosely stacked rock. Stones the size of a fist or larger leave gaps between and beneath them that make perfect retreats. Near doors, patios and play areas, use small, tightly packed gravel or pavers set close together.
AdvertisementWhy it worksSnakes need gaps to hide in. Fine mulch and tight gravel have none, while deep pine straw and loose rock are full of them. -
Fencing
9. Consider snake fencing in high-risk areas
Have you tried this?Where venomous snakes are common and there is a small area you most want to protect, such as a children's play space, a dog run or a patio, a properly built snake fence works well. It is too costly and too demanding to maintain around a whole property.
AdvertisementUse galvanized hardware cloth with quarter-inch mesh. Buy it four feet wide. Bury the bottom six inches in a narrow trench, and lean the fence outward at about a thirty-degree angle, with the support stakes on the inside. That leaves a barrier roughly three feet high that a snake finds difficult to climb, because it has to move out along an overhang. An existing chain-link or picket fence can be upgraded by fixing the same mesh to its outer face and burying the bottom edge.
AdvertisementGates are the weak point. They must fit tightly on all sides, sit flush with a hard threshold, and be kept closed. Keep grass and weeds trimmed along the outside, and do not stack anything against the fence, because a snake will use it as a ladder.
Inspect the fence every few weeks for washed-out soil, rodent burrows and bent mesh.
Why it worksQuarter-inch mesh stops even young snakes, the buried edge stops them from pushing under, and the outward lean defeats climbing.Advertisement -
Repellents
10. Save your money
Have you tried this?No chemical snake repellent has been shown to work reliably in controlled tests. Snakes have been observed crawling straight across commercial granules, sulfur, lime, cayenne and mothballs. Ultrasonic and vibrating devices fare no better. So do rope, hair, and the plants sometimes sold as snake-repelling.
Mothballs deserve particular caution. They are made of naphthalene or paradichlorobenzene, both registered pesticides meant for use in sealed containers. Scattering them outdoors or under a house is illegal misuse, it contaminates soil and water, and the pellets look like candy to a small child and a treat to a dog. Swallowing them causes serious poisoning.
AdvertisementIf you find a snake and want it gone, the safest tool is a garden hose. A gentle spray from a distance will send most snakes on their way. For a snake you believe is venomous, keep people and pets back, watch where it goes, and call a licensed wildlife removal service. Do not try to kill it or pick it up.
AdvertisementEvery dollar spent on repellent is a dollar not spent on a door sweep, a roll of hardware cloth or a firewood rack.
Why it worksSnakes respond to food and cover, not to smells. Changing the habitat costs little and is the only approach with evidence behind it.
The short version
Snake control comes down to three things: remove the food, remove the cover, and close the gaps. Keep the grass at three inches or lower. Lift firewood and stored materials off the ground. Control rodents and spilled birdseed. Open up the base of shrubs. Seal the house with door sweeps and quarter-inch hardware cloth. Keep mulch thin and the ground dry.
None of this will keep every snake out forever, and it does not need to. The goal is a yard that snakes cross without stopping. A snake that finds no meal and no shelter moves on within hours.
When one does turn up, give it room and a clear way out. Most are harmless and doing useful work. If you think it is venomous, keep everyone back and call a local removal service. If anyone is bitten, call 911 or Poison Control at 1-800-222-1222 and go to an emergency department.
Last updated . This article is for general information. Wild animals are unpredictable, so follow local wildlife and park guidance.
