Mosquito Repression Program

Welcome to University Park's (UP's) Mosquito Repression Program. For more information about the program or to schedule a free yard inspection, please email or call 301-852-1889.

UP Mosquito Program

When it comes to those pesky mosquitoes, click here to learn what you need to be aware of this summer, and what you can do to stop them from causing you trouble.

Click here to read an article titled "Neighbors help neighbors control urban mosquitoes" found in Nature: International Journal of Science which features University Park's Mosquito Program.  

Mosquito Video

Click here to view a short video by PBS on how mosquitoes use 6 needles to suck your blood, how they breed, and why mosquitoes can be dangerous to your health.

About Mosquitoes

View a report on our program for more information. Read on to learn more about the Asian Tiger Mosquito, their breeding habits, and what you can do to keep mosquitoes out of your yard.

Asian Tiger Mosquito

  • Bites mainly during the daytime
  • Most common mosquito in UP
  • Short flight range of about 300 feet, so if there are Tiger mosquitoes in your backyard, they must have originated there or just nearby
  • Small, dark mosquito with stripes and banded legs

Tiger Mosquitoes can spread West Nile, dengue, chikungunya, and Zika viruses in humans, as well as diseases in pets and other animals.

The Northern House Mosquito

  • Second most common mosquito in UP
  • Small, mostly plain light brown in color, with no distinctive leg markings
  • Usually bites at night time (7 p.m. to 6 a.m.); sometimes enters homes in the fall in search of a sheltered place to overwinter

This mosquito is the main vector of West Nile virus in this part of the U.S. Five people died of West Nile Virus in Maryland in 2015.


Mosquitoes lay their eggs in standing water. The larvae must live in water for a week before they can become a full-fledged adult. The best way to eliminate mosquitoes is to remove any areas of standing water where they can breed.

Examples of Breeding Areas

  • Birdbaths and Ornamental Ponds
  • Inflatable Pools and Kid Toys
  • Outdoor Ornaments and Decorations
  • Plant Pots and Saucers
  • Puddles in Bins, Lids, or Containers
  • Uncleaned Gutters and Drainpipes
  • Yard Equipment, Such as Wheelbarrows or Buckets

What Can You Do?

Prevent Mosquitoes Breeding

  • Always close the lids of your garbage cans.
  • Always turn over your wheelbarrows, buckets, toys, etc.
  • Check and clean roof gutters, especially in April and May before the mosquito season starts.
  • Check your yard once a week to tip or remove these water-holding containers.
  • If you have an ornamental pond, use a circulation pump to aerate it, and stock the pond with fish and BTI dunks.
  • Keep drains and culverts free of grass clippings, weeds and trash so water will drain properly.
  • Talk to your neighbors about breeding areas that may be in their yards.
  • Work with the community to educate the whole town about the issue. Organize group clean-ups.

Avoid Bites

  • Apply repellent such as picaridin, DEET, or oil of lemon eucalyptus to exposed skin and/or clothing.
  • Install or repair window and door screens to keep out mosquitoes.
  • Try to use light colored clothing, as mosquitoes are more attracted to people in dark clothing.
  • Use mosquito netting over infant carriers and strollers.
  • Wear long-sleeve shirts, long pants, socks and shoes when mosquitoes are more active.