Tick populations across Maine have grown substantially over the past two decades, and the trend has continued. The black-legged tick—the species responsible for transmitting Lyme disease—has expanded its established range northward and is now found in areas of the state where it was uncommon or absent a generation ago. For Maine homeowners, this shift has real consequences for how seriously tick exposure needs to be taken and what kind of protection is warranted. Our tick control services are designed specifically for the conditions Maine properties present throughout the tick season.

Milder Winters Have Allowed More Ticks to Survive

Ticks do not thrive in extreme cold, but they are more cold-tolerant than most people assume. The black-legged tick can remain active whenever temperatures are above approximately 35 to 40 degrees Fahrenheit, and it survives winter by sheltering under leaf litter and snow cover. As Maine has experienced more variable winters with less sustained deep cold, tick survival rates from one season to the next have improved. More ticks surviving winter means larger populations the following spring.

Deer Populations and Habitat Overlap

White-tailed deer are the primary reproductive host for adult black-legged ticks. As deer populations have grown across Maine and deer have adapted to living closer to residential areas—including suburban neighborhoods, wooded lot edges, and properties adjacent to conservation land—tick pressure on those same properties has increased accordingly. Deer do not need to enter a yard directly to introduce ticks; they carry ticks along their travel corridors, which often run through the same wooded edges and hedgerows that border residential lots.

White-Footed Mice as a Disease Reservoir

Deer carry ticks but are not the primary source of Lyme disease infection in ticks. The white-footed mouse plays that role. Larval ticks feed on white-footed mice and acquire the Borrelia burgdorferi bacteria responsible for Lyme disease at that stage. White-footed mice are common across Maine, particularly in wooded and brushy areas near homes. Their population has remained stable or grown in many areas, and their proximity to residential properties sustains the disease transmission cycle.

Expanding Range

Data collected by the Maine CDC and tracking efforts by public health researchers have documented a clear northward expansion of established black-legged tick populations over recent decades. Areas in central and northern Maine that were once considered low-risk have seen increasing tick activity. Coastal and southern Maine communities where ticks were already well established have continued to see high activity levels. As our post on when ticks become active in Maine explains, the active season now extends longer on both ends than it did historically.

What This Means for Property Owners

Increased tick activity means that properties throughout Maine—not just heavily wooded or rural ones—require a serious approach to tick management. Keeping grass trimmed and clearing leaf litter from yard perimeters reduces harborage, but it does not provide the level of control that professional treatment does. The Yard Resolution program delivers monthly treatments from April through September, targeting the areas of a property where tick populations concentrate: wooded edges, shaded zones, and perimeter vegetation.

For homeowners who also dealt with Lyme disease concerns last season, our post on what Maine homeowners need to know about Lyme disease and spring tick season provides additional context on transmission risk and what protective steps matter most.

To get your property on a seasonal tick program, request a free quote and we will assess your yard and recommend the right treatment schedule.