Call pest control as soon as you see any sign of rats — droppings, gnaw marks, sounds at night, or greasy wall marks. Don't wait until you see an actual rat. Rats breed fast: a single pregnant female can produce up to 72 pups per year, and an unaddressed pair can exceed 1,000 individuals within 18 months. Early action is always cheaper and faster than treating an established colony.

When You Should Call Pest Control for Rats

You should call pest control as soon as you see any clear sign of rat presence — not just when you see the animals themselves. Rats are nocturnal and secretive; if you spot one, there are almost certainly more hidden nearby. Waiting turns a small problem into a large, expensive infestation.

Why Acting Fast Matters

Rats are fast breeders. A single pregnant female rat can produce up to 72 pups per year. An unaddressed infestation starting with just 2 rats can exceed 1,000 individuals within 18 months. Beyond numbers, rats cause serious damage:

• Chewing wires, insulation, pipes, and wood — creating fire and flood risks
• Contaminating food and surfaces with droppings and urine
• Spreading diseases including:
  • Leptospirosis — can cause kidney failure in humans and pets
  • Salmonellosis — a form of severe food poisoning
  • Hantavirus — a serious lung disease transmitted through dried droppings

Key Signs You Need Professional Pest Control

• You see any rat — even one — inside your home, attic, or basement
• You find dark pellet-shaped droppings along walls or behind appliances
• You notice chewed food packaging, wires, or structural materials
• You hear scratching, thumping, or running in walls or ceilings at night
• You spot greasy smudge marks along baseboards (from rats' oily fur)
• You smell a strong musky or ammonia-like odor near nesting areas
• You find shredded paper, fabric, or insulation used for nesting
• Your own trapping or sealing efforts have failed or the problem keeps returning

What to Expect From a Professional Pest Control Visit

Professional specialists will:

• Inspect the entire property to find all nesting areas, runways, and entry points
• Identify the species (Norway rats vs. roof rats) — treatment differs by species
• Deploy commercial-grade baits and traps not available to the public
• Physically seal entry points to prevent re-entry
• Recommend or perform cleanup of droppings and nesting material

Follow-up visits are standard — rats require ongoing monitoring to confirm full elimination.

Anchor Pest Services in NH offers same-day rat inspections across Manchester, Nashua, Concord, and surrounding areas. Call (603) 785-0118.

If You Want to Prevent Rats Before Seeing Signs

• Seal all gaps over ½ inch around the foundation, walls, and roof with steel wool, hardware cloth, or cement — rats squeeze through holes as small as a quarter
• Store all food (including pet food) in sealed hard containers
• Clean up crumbs and don't leave dishes or garbage out overnight
• Remove clutter, debris, or stacked firewood near the home
• Trim overgrown vegetation away from exterior walls

If any warning signs appear despite prevention, don't delay — call a professional immediately.