If you are noticing ants this time of year in the Boston area, then you probably have a nest on the inside of your insulation. Sometimes ants or ants with wings (swarmers) will show up in the coldest months, like now. It is a good sign that a nest exists on the interior side of the insulation, probably near a heating source. These ants will still be trailing in the usual places, looking for food and water. Water or wet food is especially important since in heated home, the relative humidity may be 28 to 32 percent.
-Lauren Greenhow, General Manager, GreenHow, Inc.
GreenHow.com. Effective Organic & Low Impact Solutions, Lawn Care, Pest Control & Termite Control in Newton and Metro Boston.