How Rodent Bait Stations Work

What Tamper Resistant Bait Stations Are and When They Are the Right Call

Rodents move along edges. A rat runs the base of a wall, the line of a foundation, the underside of a deck, the edge of a garage slab. A mouse does the same at a smaller scale, rarely more than a few dozen feet from its nest. A bait station works because it is placed on those runways, with its openings in line with the direction of travel, so the animal meets it as part of a route it already uses. A station set out in the open is mostly ignored.

The inspection finds the runways: rub marks along walls, droppings concentrated in one spot, gnawing, greasy trails, burrows at the foundation. Stations are then set at those points. Around a house that usually means along the exterior foundation line, inside the crawl space near vents and utility penetrations, along a garage perimeter and in outbuildings and feed rooms. Each station is anchored so it cannot be carried off, locked, and logged so we know what went where.

Bait is a slow acting rodenticide, which is what makes it work. Rodents are cautious about new food and will sample before committing. A bait that acted fast would teach the rest of the colony to avoid it. Because the bait takes several days, animals continue to feed and share the food source without connecting it to harm. It also means results are not visible on day one, and some animals may die out of sight and produce a temporary odor, which we tell you about in advance.

Stations are the right call for an active population in and around a structure, and for properties with steady pressure from fields, woods or water where new animals keep arriving. They are not a substitute for sealing the openings. A station reduces the number of rodents. It does not close the gap in the sill plate they came through. On most properties we pair stations with exclusion, and where only one is needed, we say which. Stations are checked and rebaited on the follow up visit and on each service visit after that.