Why iguanas end up using your pool
Iguanas prefer to defecate in water, and a backyard pool is an obvious spot for an animal already basking on the deck. Their droppings — a dark, log-shaped dropping often capped with a white urate — can carry salmonella bacteria, the same reptile-associated salmonella public-health agencies warn about with pet reptiles. Finding them floating in the water or smeared across the deck is a genuine sanitation issue, not just an eyesore.
This is one of the most common complaints we get from families with young children and from HOAs running a community pool, where a single resident iguana can foul the water nightly.
What chlorine does and doesn't cover
Properly chlorinated pool water reduces the risk to swimmers, and salmonella doesn't survive well at correct free-chlorine levels. But chlorine doesn't undo everything. Droppings foul the filter and skimmer, the surrounding deck becomes contaminated where people walk barefoot and where towels and toys land, and the risk climbs whenever the chemistry drifts out of range — which is common on a heavily used residential pool.
Cleaning it up safely
When you find droppings, handle them as a contamination event rather than routine debris.
- Wear disposable gloves and remove solid droppings with a net or scoop, not bare hands
- Bag and discard the waste; don't hose it into a bed where kids and pets play
- Verify free chlorine is at the recommended level and shock the pool if droppings sat in the water
- Rinse and disinfect contaminated deck areas, then wash your hands thoroughly
The lasting fix is upstream
Cleaning every morning treats the symptom. The durable fix is keeping the iguanas off the deck and out of the water in the first place — removing the resident animals and cutting off the basking spots and shoreline access that keep drawing them back. Once the animals are gone, the fouling stops rather than repeating daily.
Common questions
Can I get sick from iguana droppings in my pool?
Iguana droppings can carry salmonella, so contaminated water and deck surfaces are a real concern, especially for young children. Clean them promptly, keep pool chlorine at the correct level, and disinfect fouled deck areas.
Why do iguanas keep pooping in my pool?
Iguanas naturally defecate in water and like to bask near it, so a pool beside a canal or seawall becomes both their toilet and their sunning spot. It keeps happening until the animals are removed and kept off the deck.
Does shocking the pool make it safe again?
Bringing chlorine to shock levels after a fouling event and letting it circulate is the standard response and greatly reduces the risk in the water, but it does nothing for the contaminated deck or the next visit, which is why removal matters.
