How to Keep Snakes Out of Your Pool

The Short Version

• Cut off their food supply: Turn off bright pool lights at night to stop insects from swarming, and clear out damp patio spots to keep frogs, toads, and mice away from your water.
• Clear hiding cover within 20 feet: Keep your lawn mowed short and remove rock piles, thick brush, and wood stacks near the pool deck so snakes have nowhere cool to hide.
• Use barriers and escape ramps: Seal yard fence gaps with fine wire mesh, and place an escape ramp (a floating mesh pad that lets trapped animals climb out of the water) by the pool edge so accidental swimmers can climb out safely.
• Scoop them from a distance: Never reach blindly into a skimmer basket (a built-in plastic bucket that catches floating pool debris); scoop snakes out using a deep leaf net attached to a telepole (a long extendable pool cleaning pole).

Why Snakes Enter Pools in the First Place

Finding a snake in your swimming pool is unnerving, but the reptile did not come looking for human company. Snakes are cold-blooded animals, meaning their internal temperature depends entirely on their environment. During scorching summer afternoons when pool owners think about how to keep a pool cold, snakes are also baking under the sun. They search for damp dirt, shaded patio stones, and open moisture to cool down and rehydrate.

Most snakes end up in the water by pure accident. Inground pools sit completely flush with the surrounding patio or lawn. A snake crawling through the grass cannot tell the difference between solid ground and clear water until it slips over the edge. Once the snake drops in, it quickly realizes it cannot climb back out. Smooth vinyl liners, fiberglass shells, and glazed waterline tiles offer zero traction for snake scales.

Food is the second big driver. Swimming pools create miniature ecosystems in dry suburban yards. Bright patio floodlights pull in thousands of flying bugs every evening. Those insects draw in hungry tree frogs, American toads, lizards, and field mice. These small critters love to hide under damp coping stones, behind potted plants, and inside skimmer openings. Snakes simply follow the scent trail of this live prey directly to your pool deck.

Once trapped in the water, an exhausted snake swims along the perimeter wall looking for any purchase or ramp to climb. The circulating current created by your pool return jets naturally pulls floating debris toward the suction intake. Within an hour or two, the swimming snake usually ends up pulled straight into the skimmer basket, where it stays trapped until someone opens the lid.

Eliminate Food and Cover Around the Pool Deck

Snakes are cautious predators that hate open spaces. Birds of prey like hawks and owls can easily spot a snake slithering across an open concrete deck. Because of this natural fear, a snake will almost never cross your pool patio unless it can hop from one patch of protective cover to the next. Establishing a clean 20-foot perimeter around your pool water is the most reliable way to keep them away.

Start by clearing all dense vegetation close to the water. Trim shrubs so the soil beneath them is visible from standing height, and pull out thick creeping ground cover like English ivy. Keep your grass mowed short right up to the patio edge. Tall grass holds morning dew and attracts field mice, giving snakes both moisture and breakfast right next to your swimming lane.

Remove physical clutter that creates dark, cool microclimates. Stacks of leftover firewood, loose landscape boulders, and bags of garden mulch are prime nesting spots. If you have cracked concrete or uneven pavers with wide gaps underneath, snakes will slip into those dark voids during the heat of the day. If you are upgrading your patio, checking how much travertine pool decking costs can help you choose a tight, smooth layout that leaves no underground gaps for pests.

You also need to break the food chain by managing frogs and insects. Replace bright white floodlights around the pool with yellow insect-resistant bulbs, or set your outdoor lights on a timer so they turn off an hour after sunset. Without a swarm of bugs buzzing over the water, frogs and toads will move elsewhere, and snakes will follow them away from your yard.

Store pool toys and maintenance equipment properly. Foam noodles, inflatable loungers, and folded solar blankets tossed in a corner create the exact damp, shaded shelter snakes crave. Keep all pool toys stored off the ground in a tightly latched deck box, and hang hoses and vacuum lines on wall-mounted brackets rather than leaving them coiled on the deck.

Physical Fences, Pool Covers, and Escape Ramps

Physical barriers provide reliable, passive protection because they do not rely on scents or weather conditions to work. If you have an above-ground pool, you already have an advantage. The sheer vertical walls of an above-ground pool naturally block snakes from crawling into the water. For an above-ground setup, your main task is securing the entry ladder. Always swing up or detach your access steps when the pool is not in use so snakes and rodents cannot climb up to the top rail.

For inground pools, standard perimeter safety fences often fail to keep reptiles out. Common wrought-iron fences and chain-link fences have openings wide enough for even an adult rat snake or garter snake to glide through effortlessly. You can snake-proof an existing fence by fastening quarter-inch galvanized hardware cloth along the bottom two feet. Make sure to bury the lower edge two to three inches into the dirt or fasten it tightly against your concrete slab with masonry screws.

Pool covers also block entry when used correctly. A tightly drawn safety cover with secure deck anchors stops wildlife from reaching the water completely. Floating solar bubble covers, however, can cause problems. If an unanchored solar blanket has sagging corners, snakes can slither onto the plastic, slip into the water underneath, and become trapped below the surface. If you use a solar blanket, make sure it fits your pool edges snugly without deep gaps.

Even with great fences, an occasional snake can wander onto your deck. This is why an escape ramp (a floating mesh pad that lets trapped animals climb out of the water) is an essential tool. These small devices feature a weighted pouch that rests on the pool deck and a textured ramp that floats directly in the water near the skimmer. When a snake or frog falls into the pool, it instinctively swims along the wall, bumps into the textured fabric, and crawls right up to safety instead of drowning in your skimmer.

The Truth About Snake Repellents Around Pools

Many pool owners rush to buy granular repellents, scented spray bottles, or repellent balls containing sulfur, cinnamon oil, clove oil, or cedarwood oil. The marketing claims suggest these strong smells overwhelm a snake's Jacobson's organ, which is the sensory organ on the roof of its mouth that it uses to smell and taste the air. In a controlled, enclosed setting, strong scents can cause a reptile to turn away, but outdoor pool decks are a completely different environment.

Outdoor winds rapidly scatter scent molecules across the yard. Even worse, the splashing water, deck wash-downs, and afternoon rain showers common during swimming season wash granular repellents away in just a few days. Reapplying expensive granules every week creates an ongoing chore with inconsistent results.

There is also a real danger to your pool water. When you sprinkle chemical granules or sulfur powders along the pool coping, swimmers splashing in the shallow end will inevitably wash those compounds into the water. These foreign chemicals can cloud your water, create stubborn stains on plaster or vinyl liners, and throw your chlorine balance out of order. You should never apply commercial pest powders directly along the water edge.

Avoid dangerous myths like scattering mothballs around your pool. Mothballs contain naphthalene or paradichlorobenzene, which are toxic pesticides. Mothballs do not reliably deter snakes, but they do emit dangerous fumes, poison family pets, and leach toxic chemicals into your soil and pool splash water. Old home remedies like pouring bleach, ammonia, or kerosene around the deck are equally dangerous and must never be used.

Decoy predators rarely work for more than a day or two. Inflatable snakes, plastic owls, and rubber alligators floating in the pool might startle a bird on the first morning, but wild snakes quickly realize the plastic toys do not move or show signs of life. Snakes will simply swim right past a rubber decoy to reach the skimmer opening.

Safe Removal Steps for a Trapped Snake

If you walk out to your pool deck and spot a live snake in the water or curled inside a skimmer, stay calm. Panicking or swinging tools wildly increases the chance of an accidental bite. Follow these clear, orderly steps to remove the animal without putting yourself or your family at risk.

1. Clear the pool area immediately: Direct all swimmers out of the water. Bring dogs, cats, and small children indoors and close your patio doors so nothing distracts you while you handle the situation.
2. Observe the snake from a safe distance: Stand at least six to eight feet back from the water edge. Take a quick look at the snake's shape and markings. Most pool visitors are harmless garter snakes, ribbon snakes, or non-venomous water snakes, but venomous species like copperheads and cottonmouths also end up in pools in many parts of the country. If you cannot identify the species with absolute certainty, treat it as venomous.
3. Never use your bare hands or reach blindly: Never slide your fingers under a skimmer lid or pull out a skimmer basket without looking first. Use the hooked end of a pole to lift the skimmer lid, and shine a flashlight inside to verify what is sitting in the basket before touching anything.
4. Assemble your cleaning pole and leaf net: Connect a standard deep-bag leaf skimmer net to your telepole (a long extendable pool cleaning pole). Extend the pole so you can reach the snake while standing several feet back from the pool edge. A deep mesh net creates a secure pocket that prevents the snake from sliding back out while you lift it.
5. Scoop smoothly from underneath: Lower the net into the water a few feet ahead of the swimming snake. Move slowly and deliberately so you do not startle the animal into diving toward the bottom drains. Guide the net under the snake's midsection and lift straight up out of the water. Keep the pole extended away from your body.
6. Release the snake or place it in a tall container: Walk the pole over to the far edge of your property, lower the net to the grass facing away from your home, and allow the snake to crawl into the brush. If you need to relocate it further away, lower the net into a tall, clean plastic trash barrel and secure the lid with a bungee cord until you can transport it.
7. Call for help when in doubt: If you spot a venomous species with a heavy, thick body and a wide triangular head, or if a snake has crawled into your pool return lines or deep plumbing, do not try to capture it. Step back, keep your eyes on its location, and call wildlife removal (a local animal control professional) to handle the extraction safely.

FAQs

Can a snake bite someone while swimming underwater?

Yes, snakes can open their mouths and bite while fully submerged underwater. While water snakes generally prefer to flee from large splashing swimmers, they will strike out defensively if an unsuspecting swimmer steps on them, brushes against them, or corners them against a pool wall. If you spot a snake in the pool, get everyone out of the water immediately rather than trying to swim around it.

Why do snakes always get stuck in the pool skimmer basket?

Snakes end up in the skimmer because of how water flows through your pool. Once a snake falls into the water and realizes it cannot climb up the slick walls, it swims continuously along the waterline looking for an exit. Your pool circulation pump pulls surface water directly into the skimmer opening, creating a steady suction current that draws the tired snake straight through the weir door and traps it inside the plastic basket.

Does pool chlorine kill snakes?

Standard residential pool chlorine levels will not kill a snake quickly. Snakes can hold their breath and swim through chlorinated water for extended periods without immediate harm, though the chemicals will eventually irritate their eyes, nostrils, and skin after several hours. The real danger for a trapped snake is exhaustion and drowning, not direct chemical poisoning.

Will running an automatic pool cleaner keep snakes away?

No, automatic pool cleaners do not frighten or deter snakes from entering your pool. Floor-cleaning units move along the bottom plaster or climb walls beneath the surface, while snakes primarily swim along the top waterline or take shelter inside skimmers. A moving pool cleaner will simply be ignored by a snake looking for a way out of the water.