A single mouse can carry hundreds of disease-spreading ticks in the larval and nymph stages. Stick these Thermacell Tick Control Tubes ($25 for six; Thermacell) in crevices around your yard’s perimeter—like stone walls—in late April, before the tick population booms (set out more in July). Mice grab the chemically treated stuffing for their nests, exposing the ticks to permethrin and killing them without harming their furry hosts.
Shown: The 1½-inch opening is an easy fit for mice.