Barrier sprays reduce adult pressure for 21 to 30 days. Unaddressed larval sources in standing water replenish the adult population every 7 to 14 days. Show Me Pest Control's St. Louis program reduces both -- and shows you which water sources to eliminate between visits.
Standing water -- gutters, containers, low-lying depressions
Subsurface in standing water -- feeding, developing
Pre-adult stage -- still in standing water, not yet flying
The mosquitoes you see and feel -- only 5% of the problem

Barrier spray handles the adult population. Larval source reduction handles the breeding population. Both are addressed on every visit.
Standing water sources are where 95% of your mosquito problem begins. We identify them all -- gutters holding water, containers collecting rain, low spots in the lawn, ornamental features, and anything that holds water for 7 or more days. Most homeowners do not find all of them. We do.
The barrier spray targets where adults rest, not where they fly. Adult mosquitoes spend nearly all of their inactive hours resting in low shaded vegetation near the ground. We treat those zones thoroughly with long-residual professional formulations.
For standing water sources that cannot be removed -- a pond, a drainage feature, a rain barrel -- we apply a biological larvicide that kills mosquito larvae at the water's surface without harming fish, frogs, birds, or pollinators. The active ingredient is species-specific to mosquitoes and related flies.
Recurring Seasonal Programs Built Around Your Property -- A single treatment reduces adult pressure for 3 to 4 weeks. A monthly or bi-monthly program maintains that pressure reduction through the full mosquito season. We build the schedule around your specific property's larval source pressure and your peak outdoor use period.
The mosquito lifecycle is the central issue in any mosquito control program. Eggs are deposited in standing water -- not ponds necessarily, but any water that persists for 7 or more days. A bottle cap, a container lid, the crease of a tarp, the depression where a lawn settles low -- all of these are viable breeding sites. Larvae develop in the water column over 7 to 14 days and emerge as adults. The adults you contact are the ones resting in your vegetation. But the adults you contact today were larvae in standing water on your property or a neighboring property two weeks ago. Until those water sources are addressed, the larval pipeline continues producing new adults regardless of what is sprayed on the vegetation.
Barrier sprays are effective for the population of adults currently present in the vegetation at the time of treatment and for the adults that emerge and contact treated surfaces during the residual period. What they do not address -- and cannot address -- is the larval population actively developing in standing water on and around the property during that same window. Larvae in standing water are completely protected from surface adulticide applied to vegetation. They emerge as adults when their development is complete and populate the vegetation. If no larvicide program is in place, the larval pipeline is continuously producing new adults on a two-week cycle throughout the season.
Mosquito pressure back within days of treatment in St. Louis? Call +1-866-315-0243. A Show Me Pest Control technician in St. Louis identifies every larval source, treats the resting vegetation, and explains what to maintain between visits.
The standing water sources that produce the most mosquitoes are frequently not visible from ground level. Gutters are consistently the largest single source on residential properties -- the water is warm, organic-rich, and undisturbed, making it ideal for mosquito development. Properties with clogged gutters may be producing thousands of adults per week from the gutters alone. Low spots in the lawn that hold water for 5 to 7 days after rain, drainage edges along fence lines, containers in landscape beds, and any item that holds even a small amount of water are all breeding sites. We locate them all, address what we can, and document what you can address between visits.
West Nile virus is endemic to St. Louis, MO and is transmitted by Culex species mosquitoes that are present across the region. Most infections are mild or asymptomatic, but a small percentage produce neurological complications that are serious. The practical recommendation is the same regardless of individual risk assessment: reduce mosquito populations around residential areas to the lowest sustainable level throughout the active season. A recurring program that addresses both adults and larvae accomplishes this. A single event spray does not -- the larval pipeline replenishes the adult population within two weeks of a single barrier treatment.

We locate your larval sources, assess adult resting zones, and explain both halves of the treatment plan before starting.
Call +1-866-315-0243Six services covering adult knockdown, larval source treatment, and recurring seasonal programs.

Full property walk to identify every standing water source where mosquitoes are actively breeding. All sources documented, larvicide applied where removal is not possible, elimination guidance provided for the rest.
We treat where adults actually are, not where they fly. Low shaded vegetation within two feet of the ground is the target zone.
Bti-based biological larvicide applied to ornamental ponds, water features, drainage basins, and any standing water source that cannot be drained. Kills larvae before they reach adulthood without harming fish, birds, or pollinators.
Recurring monthly visits timed to maintain adult knockdown residual coverage through the full mosquito season. Each visit includes a property check for new larval sources, barrier spray, and larvicide application as needed.
Single-visit barrier treatment applied 24 to 48 hours before an outdoor event. Knocks down adult mosquitoes in the vegetation and provides residual coverage for the duration of the event and several days beyond.
For properties in areas of St. Louis, MO with deer tick or lone star tick pressure -- tick and mosquito combined programs provide efficient coverage for both pests.
The sequence that produces lasting mosquito pressure reduction.
We walk the property first. Larval sources found, resting zones mapped, treatment plan built. No product is opened until the assessment is complete.
Professional residual adulticide applied to low vegetation, underbrush, fence lines, and deck soffits. Current adult population knocked down, 21 to 30 day residual provides coverage through the treatment window.
Every untreatable water source receives larvicide. Treatable sources are documented and explained so you can address them between visits.
Monthly or bi-monthly return visits scheduled before we leave based on your property's larval source load and your outdoor use pattern. Program structure explained and confirmed on the initial visit.
Three outcomes from St. Louis customers -- including one who had already tried a competitor's service.
Three summers of unusable backyard. Two previous spray companies. Show Me Pest Control found the larval sources the other companies never looked for -- 7 of them -- and treated every one. Monthly program, outdoor time restored.
We were skeptical that a treatment 2 days before the party would make a difference. It made a complete difference. Four-hour outdoor evening graduation party, nobody got bitten. Show Me Pest Control event prep treatment. Now on the monthly program for the season.
The ornamental pond was the whole problem. Show Me Pest Control treated it with biological larvicide on the first visit, treated the vegetation, and showed me how to maintain the pond between their visits. The pond is not going anywhere -- but the mosquitoes it was producing are gone.

We find the sources, treat both halves, and schedule your seasonal program. Call +1-866-315-0243.
Call +1-866-315-0243