MOSQUITO BYTES NEWSLETTER

IT'S TIME TO TAKE STEPS TO PREVENT UNWANTED GUESTS

Act Now to Prevent Rats and Mice from Taking Over Your Home

As cooler weather approaches, humans aren't the only ones who want to come in from the cold. Rats and mice also prefer warmth over the cold. So, now is the time to take steps to prevent these vectors of disease from invading your cozy home.


If you live in Contra Costa County and suspect you have rat or mouse activity on your property, you can request the Contra Costa Mosquito and Vector Control District's (District) rat and mouse service. During the service, one of the District's state-certified technicians will take a look at the front and back yards to see if there is any evidence of rat and mouse activity. The District technician can also check for evidence in the garage as long as the large garage door is open. In addition to looking for evidence of rats and mice, the technician will also observe any items that might attract rats and mice to the property.

District technician checks for signs of rat and mouse activity.

Rats and mice are attracted to a property by things that can provide food and/or shelter. Pet food left outside, fallen fruit or nuts from trees, bird seeds, and any snails in the yard can all provide rats and mice with sources of food. Dense vegetation and clutter, including ivy, wood piles, and debris piles, can all provide shelter to rats and mice, and trees or bushes that hang over or touch a home's roof can allow them to access the interior of homes and garages through holes or spaces as small as the size of a pencil eraser.


Once the District technician is done checking the property for signs of rat or mouse activity, the employee provides the resident with a brochure that includes a list of recommendations related to rodent prevention. The technician will discuss any observations made while providing the District service with the resident.


Key Points about Rats and Mice


  • They can spread viruses and bacteria through dust created when vacuuming or sweeping up rodent waste and nesting materials.
  • They can damage car or home wiring by gnawing on the wires.
  • They can contaminate food with their waste products if they get into kitchen cupboards or the pantry.


What to do about Evidence of Rats and Mice on Your Property


If the District technician finds evidence of rats and mice on your property, follow the recommendations provided by the technician and in the brochure. Those recommendations can include, but are not limited to:

  • Install 1/4 inch wire mesh over vents along the foundation, attic, and other openings because larger mesh vent screens allow entry to rats and mice.
  • Harvest ripe fruits and nuts, and pick up any fallen fruit and nuts before dark each night.
  • Thin dense vegetation to allow sunlight to shine through.
  • Store pet food in metal containers with a tight-fitting lid, and do not leave pet food outside. If you must, only leave what your pet will eat and remove any excess food before sunset.

If you find droppings or nesting materials, do NOT sweep or vacuum them. Stop what you are doing immediately.

  • Put on a mask and rubber gloves, and get a disinfectant spray, paper towels, and a plastic bag.
  • Spray and thoroughly wet the droppings and/or nesting materials with disinfectant, following the instructions on the label, before wiping up the rat and mouse evidence with the paper towels.
  • When all of the droppings and/or nesting material have been wiped up, place the used paper towels in the plastic bag, then take off the gloves so that they are inside out and place them in the bag as well. Seal the bag and place it in an outdoor trash can. Then, wash your hands thoroughly.

The bottom line is:


Rats and Mice can make you sick and damage your property.


Take steps to make your property less attractive to them now that cooler weather can tempt them to find warmer shelter.

Never sweep or vacuum rat or mouse droppings or nesting materials because

inhaling the resulting dust can make you sick. Follow the instructions above for properly cleaning the droppings and nesting materials.


And if you find evidence of rats and mice on your property, contact the District and request our Rat and Mouse service.


By working to reduce the risk of rats and mice on your own property, you are working with the District to Protect Public Health across Contra Costa County.

Contra Costa Mosquito and Vector Control District, an independent special district and public health agency, is temporarily located at 5750 Imhoff Drive, Suite I, Concord, CA. Contact the District to report mosquito and vector problems online or at (925) 685-9301.

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