Every fall, as temperatures drop across Stillwater and central Oklahoma, mice begin moving from fields and open land toward residential structures seeking warmth and food. Murray Pest Control reliably sees a surge in rodent calls from September through November. Here’s what the research — and years of Oklahoma field experience — says actually works for mouse control.

Step 1: Confirm You Have Mice (Not Rats)

Mice and rats require different treatment approaches. Mouse droppings are small (1/8 inch, like rice grains) and mice can enter through gaps as small as 1/4 inch. Rat droppings are much larger (1/2 inch) and rats require half-inch gaps. Getting the identification right matters for selecting the right trap size and bait strategy.

Step 2: Find Every Entry Point

Trapping without exclusion is an ongoing battle — you’ll catch mice, but more will come through the same entry points. Common Oklahoma home entry points include: gaps around water pipes and conduit where they enter the foundation, gaps under garage doors without brush seals, damaged foundation vents, spaces where utility lines enter the home, and gaps around HVAC penetrations. Use steel wool or copper mesh to fill gaps (mice can’t chew through these), then caulk over them.

Step 3: Trap Effectively

Snap traps remain the gold standard for indoor mouse control — they provide immediate results, you know when a mouse is caught, and there’s no risk of a poisoned rodent dying in a wall and creating odor problems. Key tips for Oklahoma homeowners:

• Place traps perpendicular to walls (mice run along walls) in areas with droppings evidence
• Use peanut butter — more effective than cheese in Oklahoma’s climate
• Set multiple traps — 6-12 for a typical infestation
• Check and reset daily; mice avoid traps that have been touched by other dead mice
• Wear gloves when handling traps to minimize human scent transfer

What Doesn’t Work (But People Try Anyway)

• Ultrasonic repellers: Multiple university studies have found mice habituate to ultrasonic devices within days. The FTC has taken action against manufacturers making unsubstantiated claims.
• Peppermint oil: Anecdotally popular but not supported by research as a reliable deterrent.
• Poison without exclusion: Rodenticide bait stations kill mice but don’t prevent new ones from entering through the same gaps. Poisoned mice also often die in walls, causing persistent odor problems.

When to Call Murray Pest Control

If you’ve set multiple traps and are still catching mice consistently after two weeks, or if you hear scratching in walls or ceilings (suggesting nesting above your trapping area), professional inspection is the right call. We conduct a comprehensive property inspection to locate all entry points, identify nesting areas, and implement a targeted program. For Stillwater and central Oklahoma homes, we also recommend pre-season exclusion work in August-September before the fall rodent influx begins.

Jake Murray is the owner of Murray Pest Control in Stillwater, Oklahoma, and holds a B.S. in Entomology from Oklahoma State University.