Published by American Structural Pest Control West | Serving the South Bay, CA
A pool or water feature in the South Bay is one of the great pleasures of living here. It’s also, from a pest’s perspective, one of the most attractive features a property can have. Water is a non-negotiable resource for virtually every pest species and a consistently available outdoor water source draws activity from a much wider range of pests than most people realize.
This applies to any outdoor water feature, swimming pools, spas, decorative ponds, fountains, birdbaths and anything else that holds or circulates water on your property. This article covers the pests most commonly drawn to these features in the South Bay, what they’re looking for and what you can do about each one.
Mosquitoes: The Most Direct Connection
The relationship between standing water and mosquitoes is well established and we’ve covered it in depth in our mosquito articles. But pools and water features introduce some nuances worth addressing specifically.
A properly maintained, circulating, chlorinated pool is not a mosquito breeding site. Moving chlorinated water does not support mosquito egg development. The issue arises with the edges of pool management: water that collects in pool covers, in pool toys and floats left outside, in filter equipment that’s not draining properly and in decorative water features like fountains, ponds and birdbaths that may not have the same circulation and chemical treatment as the main pool.
Aedes mosquitoes, the daytime-biting species now common throughout the South Bay, can breed in amounts of water as small as a teaspoon. A pool cover that sags and holds a puddle after rain, a filter backwash area that stays wet or a decorative pot near the pool that collects water are all potential breeding sites even when the pool itself is well maintained.
What ASPCW can help with
Mosquito barrier spray treatments targeting the vegetation and resting surfaces around your pool area can significantly reduce the daytime mosquito pressure during pool season. We covered this service in detail in our mosquito patio article. Pricing is based on lot size and monthly maintenance during the active season is the most effective approach.
Wasps and Yellow Jackets: Drawn to Water and Food
Wasps are attracted to pools for two reasons: water and food. Wasps need water to cool their nests and feed their larvae and a pool provides a reliable source. Yellow jackets in particular become increasingly drawn to outdoor food and drinks as summer progresses and pool gatherings are exactly the kind of environment they investigate.
Late summer is peak yellow jacket aggression season, which coincides directly with peak pool season in the South Bay. A colony that established in spring and has been building through summer reaches its largest and most defensive size right around the time everyone is spending the most time outdoors near the pool.
Wasp and yellow jacket nests near pool areas, under pool house eaves, in nearby landscaping or in wall voids adjacent to outdoor entertaining spaces are worth addressing promptly. A disturbed colony near a pool where people and children are present is a genuine safety concern.
What ASPCW can help with
We remove wasp and yellow jacket nests serving up to five nests per service. Current pricing starts at $225 for first story removal and $345 for second through third story removal. All removals come with a 45-day warranty. Pricing is subject to change so give us a call for the most current rates. If you’re noticing wasp activity around your pool area don’t wait until late summer when colonies are at their most aggressive.
Rodents: Pools as a Water Source
This one surprises people but it’s a real and consistent pattern. Rodents need water just like every other living creature and a pool or spa provides a consistent outdoor water source that roof rats and other rodents will visit regularly, particularly during dry stretches when other water sources are scarce.
Roof rats are excellent climbers and will navigate pool equipment, fencing and landscaping to access pool water. Norway rats will approach at ground level. Evidence of rodent activity near pool equipment, gnaw marks on pool supply tubing, droppings near the pool deck or disturbed soil around pool equipment are all signs worth taking seriously.
Beyond the water access itself, the landscaping that typically surrounds a South Bay pool, dense shrubs, mature trees and ground cover, provides the harborage conditions that rodents find attractive. A pool area that’s a pest destination for water may also become a nesting site if surrounding conditions support it.
What ASPCW can help with
A rodent inspection identifies entry points and activity patterns around your property including any pool-adjacent areas that are contributing to rodent pressure. Our trapping service and exclusion work address both the current population and the structural vulnerabilities that allow access.
Ants: Moisture and Food Around the Pool
Argentine ants are drawn to moisture and the area around a pool tends to stay consistently damp from splashing, backwash and irrigation. Combined with the food residue that accumulates around pool decks and outdoor entertaining areas, a pool environment offers ants exactly the combination of resources they’re looking for.
Ant trails leading toward the pool deck, activity near outdoor food prep or dining areas adjacent to the pool and ants appearing in pool water itself are all common complaints during summer. Ants that end up in the pool are typically foraging workers who got too close to the water’s edge.
What ASPCW can help with
A maintained exterior barrier treatment is the most effective approach to ant pressure around pool areas. Our recurring service creates a barrier that intercepts foraging ants before they establish in the pool deck and surrounding areas. During summer when ant activity is at its peak, monthly service provides the most consistent coverage.
Birds: Attracted to Water Features of All Kinds
The South Bay is home to a remarkable variety of bird species and outdoor water features attract them consistently. Sparrows, mockingbirds, crows, pigeons, finches and many other species will drink from and bathe in pools, ponds, birdbaths and fountains. In most cases bird activity around a water feature is pleasant rather than problematic.
The pest connection comes from what birds bring with them. Bird droppings around water features and pool decks can be a sanitation concern and create slippery surfaces. More significantly, birds carry fleas, mites and ticks and their presence in your yard increases the likelihood of those parasites being introduced to the surrounding environment where your pets spend time. A birdbath or pond that attracts significant bird traffic is also creating conditions that support the flea and tick populations that can eventually make their way onto your pets and into your home.
Managing bird activity around water features isn’t necessarily about discouraging birds entirely but about being aware of the connection and making sure your pets are protected with appropriate flea and tick prevention, particularly during the warmer months when bird activity is highest.
Earwigs and Silverfish: Moisture-Loving Insects
Earwigs and silverfish are both moisture-dependent insects that thrive in the consistently damp conditions that exist around pools and water features. Pool equipment areas, the space under pool decking, damp soil adjacent to water features and any area that stays persistently wet are all attractive harborage for these species.
Earwigs in particular are commonly found around pools and are frequently a complaint from homeowners who find them in the pool water or on the pool deck in the morning. They are nocturnal and are drawn to the moist conditions and the light that reflects off pool water at night. They’re harmless but unwelcome and their presence usually signals that moisture conditions around the pool area are more extensive than they need to be.
What ASPCW can help with
Earwigs and silverfish are covered under our general pest control service. A combination of exterior barrier treatment and addressing the moisture conditions that support their population in pool areas is the most effective approach.
Pool Maintenance Habits That Reduce Pest Attraction
A few pool and water feature maintenance habits make a meaningful difference in how attractive your pool environment is to pests.
Keep the water moving. Stagnant water is far more attractive to mosquitoes and other insects than moving water. Running your pool pump on a regular schedule, particularly overnight, maintains circulation that disrupts potential breeding conditions.
Keep up with chlorination. Properly chlorinated water does not support mosquito breeding. Letting chlorine levels drop during heavy use periods or after rain creates a window where the water becomes more hospitable to insect activity.
Manage pool covers carefully. Pool covers that sag and collect rainwater or condensation are one of the most overlooked mosquito breeding sites in pool-owning households. Check covers after rain and ensure water drains rather than pools.
Address water features separately. Decorative ponds, fountains and birdbaths near the pool need their own management. Fountains and ponds that have moving water and appropriate treatments are far less attractive to mosquitoes than still decorative water features. Birdbaths should be refreshed and scrubbed at least twice a week during mosquito season.
Keep the pool deck and surrounding area clean and dry. Food residue, standing water on the deck, damp towels and accumulated organic debris all contribute to attracting a range of pests. Rinsing the deck, putting food away promptly and keeping the immediate pool environment tidy removes many of the secondary attractants beyond the water itself.
Frequently Asked Questions
Can mosquitoes breed in my pool?
A properly maintained, circulating and chlorinated pool is not a mosquito breeding site. The risk comes from peripheral water sources such as pool covers that collect rainwater, decorative water features without adequate circulation or treatment, pool equipment areas that stay wet and any container near the pool that holds standing water. Keeping up with pool maintenance and eliminating these secondary sources is the most important step.
Why do I find earwigs in my pool every morning?
Earwigs are nocturnal and are attracted to the moist conditions and reflected light around pools at night. They often fall into the water accidentally while foraging along the pool edge. Finding earwigs in the pool in the morning is a sign that earwig activity in the surrounding area is elevated. Addressing the moisture conditions in the soil and landscaping around your pool and maintaining an exterior barrier treatment are the most effective responses.
Are wasps dangerous near a pool?
Yellow jackets in particular can be genuinely dangerous near a pool, especially in late summer when their colonies are at maximum size and aggression. A disturbed colony near a pool where children are present, or near anyone with a known sensitivity to wasp venom, is a serious safety concern. If you’re noticing significant wasp activity around your pool area professional nest removal before late summer peak aggression is strongly recommended.
Do rodents really come to pools for water?
Yes. Roof rats and other rodents need consistent water sources and a pool or spa provides exactly that. During dry stretches this draw becomes even stronger. If you’re seeing signs of rodent activity near pool equipment or on the pool deck, the pool itself may be contributing to the attraction. Rodent inspection and exclusion work combined with reducing other attractants in the pool area is the right approach.
Noticing Increased Pest Activity Around Your Pool This Summer?
Give us a call and we’ll assess what’s going on and put together the right approach for your property. Pool season should be enjoyable and we’re here to help keep it that way.
American Structural Pest Control West
Phone: (310) 699-3110
Email: office@aspcwinc.com
Website: aspcw.com
Serving Torrance, Redondo Beach, Hermosa Beach, Manhattan Beach, El Segundo and throughout the South Bay.