Most pest infestations don't start with a dramatic sighting. They start quietly — behind walls, under sinks, and in the dark corners of your basement or attic. By the time you see a pest out in the open, the problem is usually much bigger than you think.
At Campbell's Pest Control, we see this pattern every week with homeowners across Central Maine. Here are the five most common warning signs that it's time to call a professional.
1. Droppings or Fecal Stains
Mouse droppings in kitchen drawers. Dark specks along mattress seams. Coffee-ground-like residue behind the stove. These are telltale signs of rodent activity, bed bug infestations, or German cockroach problems.
Droppings are often the first and most obvious clue. If you're finding them regularly, the population is already established and growing.
2. Unusual Sounds at Night
Scratching, scurrying, or gnawing sounds coming from walls, ceilings, or attics — especially at night — almost always point to rodents. Mice and rats are nocturnal and remarkably active once a household goes quiet.
Our rodent exclusion service includes sealing the entry points these animals use to get inside, not just trapping the ones already there.
3. Damage to Food Packaging or Structures
Gnaw marks on cereal boxes, torn bags of pet food, or chewed wiring in the attic are all signs of an active infestation. Carpenter ants can silently hollow out structural wood for months before you notice any damage. If you're seeing sawdust piles near baseboards or windowsills, that's a red flag.
Our general pest control service covers carpenter ants, spiders, wasps, and other common household pests that cause this type of damage.
4. Bites or Skin Reactions
Waking up with itchy red bites in lines or clusters? That's a classic sign of bed bugs. Spending time in your yard and finding ticks or welts? You may need mosquito and tick yard treatments.
Don't ignore unexplained bites. Bed bug infestations grow exponentially — a few weeks of delay can turn a minor issue into a major one.
5. Musty or Unusual Odors
A sweet, musty smell in the bedroom can indicate bed bugs. An oily, pungent odor near the kitchen often signals German cockroaches. Rodent urine has a sharp ammonia-like smell that intensifies over time.
If something smells off in your home, trust your nose — and then call a professional to investigate.
What to Do If You Notice These Signs
If any of these sound familiar, don't wait. Pest problems don't resolve on their own, and over-the-counter sprays often make things worse by scattering pests to new areas of your home.
Contact us or request service and we'll schedule a thorough inspection. We serve homeowners throughout Central Maine, including Bangor, Waterville, Augusta, Newport, and Palmyra. View all service areas.
Want to learn more about what to expect throughout the year? Read our seasonal pest calendar for Central Maine, or find out when it's time to call a professional instead of going DIY.
Learn more about our team and why Central Maine families trust Campbell's Pest Control to protect their homes.
