Pest Control in Crystal Bay, MN

Summer cottages made into winter homes

A cottage built for July does not always handle January well. Walls may be thin, with little insulation in the cavities, floors may sit on posts or short piers with an open space beneath, and additions may have been built on to the original frame at different times. Each change leaves seams, and the seams are where mice and insects get in.

We do not know how each building in Crystal Bay was converted, so a technician will look for it. The space under the floor, the junction between old and new, and the point where plumbing enters are the first checks. If a crawl space is open to the outside, mice can come and go freely. See basement and foundation sealing and mouse control for how the closing is done.

Houses that sit empty part of the year deserve special care. An unoccupied cottage is a quiet nest site, and the first sign may be a smell on the day you return.

Wooded shoreline: wildlife and damp wood

Trees and water mean squirrels, raccoons and bats near the roofline. Cottages often have low, simple roofs under tree canopy, and eaves, vents and old flues are all open to a climber. Carpenter ants work wood that stays wet, as with a dock-side deck or a sill under a leaking gutter, and colonies restart with the spring thaw.

Never seal an opening before checking what is inside. See squirrel and raccoon exclusion, bat exclusion and carpenter ant control. We do not give bat dates; rules should be checked when you call.

Shoreline mosquitoes

Along the shoreline in summer, standing water and wet margins breed mosquitoes. The Metropolitan Mosquito Control District treats public wetlands across seven counties until about October. Your own gutters, buckets and boat covers are separate. The mosquito control page has more.

What we do not know

We have no sourced figures on the number of homes here, the share converted from cottages, the foundations used or the most common complaint. Rather than guess, we say so. When you call, describe whether the building is a converted cottage or a newer house, whether it has a basement, a crawl space or posts, and whether it is occupied through winter.

If the building is occupied in winter

A cottage that has been converted for year-round use has to cope with the cold months, and the animals that wanted shelter this year will find it. Warm air leaking from a poorly insulated wall is a sign for mice as much as for you. Closing the gaps where cold air comes in often closes the gaps where mice come in, so draft-sealing and rodent-proofing are partly the same job.

Watch for the quiet signs: a chewed bar of soap, droppings behind appliances, scratching at night in the same corner. Overwintering insects such as boxelder bugs and Asian lady beetles may appear on a warm afternoon; University of Minnesota Extension says they die within days without food. Vacuum them up rather than chasing them. A summary of the timing is in the guide to boxelder bugs and Asian lady beetles.

Because we have little sourced information on this area, we cannot say which of these is most common here. Treat them as the questions to ask a technician, not as findings.