& Community Pests
|Department of Entomology||
|TERMITE TREATMENTS FOR HOUSES WITH WELLS, CISTERNS & DRAINS||
Insect Note - ENT/rsc-22
Termite treatments must always be done in a manner that avoids damaging or contaminating water sources. Wells, cisterns and foundation drains can pose a challenge to termite treatments. Although these situations are difficult, there are options for protecting your home with some type of termite treatment.
|Wells and Cisterns|
|Most termiticide labels and some local building codes prohibit or limit soil treatments when a well or cistern is located under or within a certain distance of a house. This restriction is intended to prevent accidental contamination of your water supply and it applies even if the well is not in use. A liquid treatment may be possible if the well/cistern is located outside, although there may be restrictions or special instructions based on the distance of the well from the foundation (usually greater than 5 feet from the foundation). You can ask the pest control company to provide a copy of the pesticide label so you know how the treatment must to be done.|
A house with a well within or near the
foundation may require special treatment.
for liquid treatments on houses with
a well inside or near the foundation:|
Subsurface or foundation
drains (sometimes called "French"
drains) are used to prevent or correct moisture problems under and around
homes. Many new homes in our area have drains installed during construction
when the soil beneath the drain or backfilled on top of it can be treated
in a way that avoids contaminating the drainage system.
Foundation drain being installed on new home.
|Foundation drains may go unnoticed during a termite inspection. If a pest control company is going to treat your house for termites, make sure that they know about the drain before any work is started. This will help prevent accidental runoff of the termiticide into your yard, storm sewer, a pond or wherever your drain line empties.|
treatments on houses with foundation drains
For houses with a well or foundation drain (or both), an alternative to the liquid soil treatment is a termite bait system. There are several bait products on the market and many companies offer only one brand of termite bait. If you think you would prefer baiting system, you should call several companies and ask about the availability (and feasibility) of using baits for your particular situation.
Controlling termites in houses with wells or drain systems can be more difficult and more labor-intensive whether a liquid or baiting technique is used. Although this added or alternative work may increase the cost of a termite treatment, the environmental concerns justify it. The pesticide label is the law; don't ask or allow the pest control company to do otherwise. If you have a well, cistern, drain or other unusual situation under or adjacent to your house, make sure that the pest control company is aware of its location before any termite treatment is done.
|Termite Page||Wood Pest Page|
Pest information and control
recommendations presented here were developed for North Carolina and may
not be appropriate for other states or regions. Any recommendations for
the use of chemicals are included solely as a convenience to the reader
and do not imply that insecticides are necessarily the sole or most appropriate
method of control. Any mention of brand names or listing of commercial
products or services in the publication does not imply endorsements by
North Carolina Cooperative Extension nor discrimination against similar
products or services. All recommendations for pesticide use were legal
at the time of publication, but the status of pesticide registrations
and use patterns are subject to change by actions of state and federal
regulatory agencies. Individuals who use chemicals are responsible for
using these products according to the regulations in their state and to
the guidelines on the product label. Before applying any chemical, always
obtain current information about its use and read the product label carefully.
For assistance, contact the Cooperative
Extension Center in your county.