Signs of a rodents problem before it gets worse
Droppings along walls, in cabinets, or near food sources
Gnaw marks on food packaging, wiring, or wood
Scratching or scurrying noises in walls or attics, especially at night
Grease marks or rub marks along baseboards and walls
Health and property risks from rodents
Rodents carry over 35 diseases transmissible to humans, including hantavirus, leptospirosis, and salmonella. Their droppings and urine contaminate surfaces and air quality. Gnawing on electrical wiring is a documented cause of house fires.
Treatment methods professionals commonly use
Method 1
Exclusion and sealing of all entry points combined with trapping
Method 2
Tamper-resistant bait stations placed along exterior rodent pathways
Method 3
Sanitation improvements and habitat modification to reduce attractants
Prevention tips that actually help
Seal gaps larger than 1/4 inch around pipes, vents, and foundations with steel wool and caulk
Store food in thick plastic or glass containers, not cardboard or bags
Keep yards clean — remove fallen fruit, secure compost, and trim vegetation near the house
Eliminate water sources like leaky faucets, pet bowls, and birdbaths near the home
DIY versus professional treatment for rodents
Snap traps and exclusion work can manage a few mice. Call a professional for rat infestations, signs of gnawing on electrical wiring, recurring problems, or if you suspect rodents in walls or attics. Rats are cautious and much harder to trap than mice.
What affects the final cost for rodents treatment
Typical pricing
$200-$800
Attic cleanup or insulation replacement can add $1,000-$5,000
Cost factors
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Frequently asked questions about rodents
How much does rodent extermination cost?
A basic mouse removal with exclusion costs $200–$500. Rat removal is more expensive at $300–$800 due to their size and caution. Ongoing rodent prevention plans run $40–$70 per month. Attic cleanup and insulation replacement after a rodent infestation can cost $1,000–$5,000 depending on the extent of contamination.
How do exterminators get rid of rats and mice?
Professional rodent control combines exclusion (sealing all entry points), trapping (snap traps or live traps placed strategically), and sanitation recommendations. Exterior tamper-resistant bait stations may be used along rodent pathways. The key is exclusion — without sealing entry points, new rodents will simply replace trapped ones.
What is the difference between rats and mice?
Mice are small (2–4 inches body), leave tiny droppings, and can squeeze through gaps as small as 1/4 inch. Rats are much larger (7–10 inches body), leave larger droppings, and need a 1/2-inch gap. Rats are more cautious and harder to trap. Norway rats burrow underground near foundations; roof rats climb and nest in attics.
Are rodents dangerous?
Yes. Rodents carry over 35 diseases transmissible to humans, including hantavirus (from deer mice droppings), leptospirosis, and salmonella. Their urine and droppings contaminate surfaces and air quality. Rodent gnawing on electrical wiring is a documented cause of house fires, and fire-safety experts estimate rodents may be responsible for a significant share of fires with undetermined causes.
How do I know if I have mice or rats?
Look for droppings (mouse droppings are rice-sized; rat droppings are larger), gnaw marks on food packaging or wood, scratching or scurrying noises in walls or ceilings (especially at night), grease marks along baseboards, and nesting material (shredded paper, insulation). A musky odor indicates a significant infestation.
Why do rodents keep coming back?
Rodents return when entry points are not properly sealed, food sources remain available, or neighboring properties have infestations. Mice can squeeze through gaps as small as a dime. Professional exclusion — sealing every gap with steel wool, caulk, or metal flashing — is essential for permanent control. Quarterly inspections catch new entry points before re-infestation.