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 Commerce City 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

The combination of adulticide, larvicide, and source identification is what produces lasting pressure reduction -- not any one treatment alone.
Larval Source Identification -- We walk your property and identify every standing water source where mosquitoes are actively breeding: blocked gutters, low-lying depressions that hold water after rain, ornamental ponds, tarps, containers, children's play equipment, and tree hollows. Most properties have 5 to 12 larval sources the homeowner has not identified. We document every one.
Professional adulticide applied to mosquito resting vegetation gives you 3 to 4 weeks of adult knockdown per treatment. We target the actual resting locations -- shaded vegetation within 2 feet of the ground, underbrush edges, deck and pergola undersides, and fence lines adjacent to neighbor vegetation.
Larvicide Application to Untreatable Standing Water -- Not every standing water source can be eliminated. Ornamental ponds, permanent drainage features, and irrigation catch basins that cannot be drained receive EPA-registered larvicide application -- Bacillus thuringiensis israelensis or surface film products that kill larvae before they reach the adult stage without harming fish, birds, or beneficial insects.
Monthly programs work because the adult knockdown from each treatment overlaps with the setup for the next application. We calendar your visits to maintain below-threshold adult pressure throughout the season, adjusting frequency based on rainfall, larval source load, and your outdoor activity schedule.
The lifecycle dynamic that makes mosquito control challenging is the speed of development combined with the scale of egg production. Each female mosquito produces hundreds of eggs per week. Those eggs develop in standing water in 7 to 14 days. A property with multiple standing water sources is continuously producing new adults on a two-week cycle. A barrier spray that knocks down the adults in the vegetation breaks one link in that chain -- but the larval sources producing the next generation are unaffected. Addressing the larval sources alongside the adult population is the only way to break both links.
How the barrier spray works matters for managing expectations about how long it lasts. The residual adulticide is applied to low vegetation -- the places where resting adults contact treated surfaces during their inactive hours. The product breaks down from UV exposure, rain, and temperature cycling. Under normal seasonal conditions in Commerce City, CO, a professionally applied residual lasts 21 to 30 days before the active compound degrades below effective concentration. That is why monthly programs are standard: the treatment schedule is aligned to the residual lifespan so that each application is made before the previous one expires. A program that skips a month during peak mosquito season allows the larval pipeline to replenish the adult population after the residual expires.
Previous mosquito service did not last in Commerce City? Call +1-866-315-0243. Our two-part protocol addresses both adult knockdown and larval source reduction -- the combination that lasts.
The biggest larval source most homeowners miss is the gutter. A single gutter section holding stagnant water after rain can produce more adults than all other sources on the property combined. After gutters, the sources we most commonly find are: lawn depressions that hold water for a week after irrigation or rain, ornamental pots without drainage holes, stacked containers in the side yard, and tarps or covers that sag and pool water. Each of these is assessed on the property walk, and the larvicide or source elimination plan is documented for you.
Disease context is relevant to why professional mosquito control is a health measure and not solely a comfort one. West Nile virus is transmitted by Culex mosquitoes that are established throughout Commerce City, CO, with cases confirmed every season. The risk level varies by county and by year depending on bird population dynamics and temperature patterns. Eastern equine encephalitis, while less common, has a severe outcome profile and circulates in regions of Commerce City, CO with appropriate habitat. The correct framing for mosquito control is not that every bite carries a specific risk -- it does not -- but that maintaining mosquito pressure below a certain threshold across a full season reduces cumulative bite exposure and the associated risk of vector-transmitted disease. A program that keeps adult populations consistently low across the full season is more effective from a health standpoint than a single treatment before a specific outdoor event. Show Me Pest Control structures programs to provide continuous pressure reduction from the beginning of the mosquito season through the first seasonal cold that collapses the active population.

We locate your larval sources, assess adult resting zones, and explain both halves of the treatment plan before starting.
Call +1-866-315-0243Every service designed around the two-part protocol: barrier spray plus larval source reduction.

Assessment covers gutters, lawn depressions, containers, ornamental features, drainage edges, and any item holding water for 7 or more days.
Long-residual professional formulations applied to all resting zones on the property in a single visit.
Biological larvicide is species-specific to mosquitoes and related flies. It is registered for use near fish and wildlife and does not harm aquatic ecosystems.
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.
Event prep treatment applied 24 to 48 hours before the event date -- not the morning of. Proper timing allows the residual to settle and the treated population to drop before guests arrive.
Combined barrier treatment addressing both mosquitoes and ticks in the same vegetation zones during the same visit. Both pests rest in low shaded vegetation and are controlled with the same professional residual application.
Clear process, explained at every step.
Every standing water source identified and documented. Adult resting vegetation zones assessed. Larvicide applications and source eliminations planned before treatment begins.
Every resting zone treated -- not just the visible areas near the deck, but the fence lines, the underbrush edges, the ground cover along the foundation.
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.
Customers who experienced the two-part protocol for the first time after previous services that treated only one half of the problem.
We had tried two spray companies. Both worked for about 10 days. Show Me Pest Control found 7 standing water sources on our property we did not know about -- including gutters holding water we had never checked. Treated all the sources, applied the barrier spray, scheduled monthly visits. First full summer we have actually used the backyard.
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.
We have an ornamental pond in the backyard. The previous mosquito service would not treat it -- they said they were not authorized to apply anything near water. Show Me Pest Control applied Bti to the pond, treated all the resting vegetation, and explained what mosquito dunks to use between visits. The pond is still there. The mosquitoes from it are not.

Property walk, larval source identification, barrier spray, and larvicide -- all on the first visit. Call Show Me Pest Control in Commerce City today.
Call +1-866-315-0243