Summer Pest Threats


Droppings, gnawing, tracks indicate areas where mice are active. Their nests, made from fine shredded paper or other materials, are often found in hidden locations. Mice are mostly active at night, although occasionally seen during daylight hours. House mice characterized by a musky smell that can often identify their presence.


Mosquitos ExterminationYou have probably heard of Aedes Aegypti, the mosquitoes that is spreading Zeka virus and are also responsible for being the vector for dengue fever and yellow fever. Mosquitoes in the Genus Aedes are a real problem because they not only spread a bunch of bad diseases, but they can utilize the tiniest amount of water to lay their eggs. In fact, they can lay their eggs in moist soil and after a good rain the young will hatch and begin their development. This poses a real problem for home owners .The females can lay eggs in flower pots areas with bad drainage wet leaves clogging gutters or even holes in the trunks of trees or branches. We will not only spray to keep the pests under control but were possible we will eliminate these breeding areas, but will also fill in cavities in trees, clean your gutters, and identify other possible problem areas and, if possible, eliminate them.

Carpenter Bees

Carpenter Bees ExterminationThey are big, bold, in your face bees that are scary. Carpenter bees are not terribly aggressive, but they bore through wood, lay eggs and close it in a special cell complete with its own food supply - a combination of pollen and regurgitated nectar. One of these tunnels or galleries can contain up to 6 sealed cells and can be 6 inches long. Galleries used by multiple bees can extend up to 10 feet. Even if the larva inside the galleries is killed, the adults can come back later, even over winter, in these tunnels and it will be back to business the following spring.

What we recommend doing is not only killing the developing larva, but if possible wrapping the wood in aluminum flashing so that the carpenter bees can never use that wood again. It may cost a little more but it is a permanent solution that helps protect your biggest investment - your home.


cockaroachWhen treating for rats it all begins with exclusion. We will treat any rat holes with tracking powder and set bait boxes. Under certain conditions we will attempt to live trap the rats. Live trapping can catch rats in one night and you don’t have to worry about them dying behind walls. Nothing smells worst then a dead rat! The disadvantage to rat trapping is you seldom catch them all, so combining exclusion with rodenticides and trapping is necessary.

Any time is a good time for roaches. These guys know no season. The thing that makes roaches so difficult to control is their truly inspiring reproductive rates. A female German cockroach has approximately 30 young every 30 days. Additionally, female roaches can store sperm from just one mating and use it for the rest of their lives.

Breaking the cockroach’s breed cycle is key to controlling this insect. Roaches require an integrated approach. We will often spray fog and use baits. We also use something called an Insect Growth Regulator (IGR). Young roaches growing up in an environment filled with IGRs will not be able to reproduce. IGRs typically take longer to work (usually 6 to 8 weeks) but over the long haul they work the best.

Black Snakes

Late summer is baby black snake time. Eggs that are laid in the spring often hatch in the fall. Black snakes usually lay approximately 2 dozen oval shaped eggs in mulch and they often hatch in early October. Warm Indian summer days bring them out and then as soon as it cools down they go straight into hibernation. Hatching black baby snakes are 8 to 10 inches long and are light grey with dark blotches. The snakes follow the scent trails that the mice leave behind and generally that's why they are in the structures and homes. If you have a snake problem, contact us - we can help.


The groundhog is a large rodent, brown with a bushy tail. They grow to be about 3 feet long and can weigh up to 15 pounds. They present issues to home owners because they dig burrows to live in and by doing so they destroy yards and gardens. Contact Baltimore Animal Control Services for help with groundhog problems.


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Pest Control License # 28248-59492

At Once Pest • 5828 Deer Park Rd • Reisterstown MD 21136 • 443-562-9509