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Home / Rodent Guide / Do Rats Chew Electrical Wires? Fire Risk and What to Check
Chewed wiring is one of the most serious kinds of rodent damage, because it is hidden and can affect your home’s electrical system. Here is why it happens and what to look for.
By Spring Hill Rodent Pros \u{00B7} Updated November 11, 2026 \u{00B7} 3 min read
Yes. Rats and mice gnaw constantly because their front teeth never stop growing, and wiring in attics, walls and vehicles is a common target. UF/IFAS Extension notes roof rats can be destructive in attics, gnawing on electrical wires and rafters. Chewed insulation can expose conductors and create a risk of shorts or fire, so damaged wiring should be checked by a licensed electrician.
Rats and mice have front teeth (incisors) that keep growing throughout their lives, so they gnaw on hard materials to wear them down, as the Vermont Agency of Agriculture explains. Wiring runs exactly where rodents travel: along rafters, through wall voids and across attic floors. UF/IFAS Extension specifically notes that roof rats can be quite destructive in attics, gnawing on electrical wires and rafters.
If you notice burning smells, sparking, scorch marks or warm outlets, turn off power to the affected circuit if it is safe to do so and call a licensed electrician right away.
Attics are warm, quiet and full of wiring, which makes them the most common place for wire damage in Florida homes. Rats often travel along the same framing that cables are stapled to. Read how rats get into attics to understand where they enter.
Mice nest behind stoves, refrigerators and dishwashers, where power cords and wiring sit close to warmth and food.
Engine bays, golf carts, mowers and boats in storage are sheltered spots where rodents nest and chew wiring. Our High Point page has tips for protecting vehicles and equipment.
Repairing the wiring without stopping the rodents only invites the same damage again. Our rodent damage repair service handles chewed soffits, vents and screens, and we coordinate with your electrician for wiring.
Chewed wiring can expose conductors and create a risk of short circuits or fire. If you find chewed wires, have a licensed electrician inspect them and deal with the rodents at the same time.
Engine bays are warm and sheltered, and rodents gnaw constantly to keep their growing teeth in check. Vehicles parked for long periods are most at risk.
Look for droppings, gnawed insulation and nesting material near cables, and watch for flickering lights or tripped breakers. A rodent inspection combined with an electrician’s check gives you a clear answer.
Call and tell us where you are and what you are hearing, seeing or smelling. A local rodent specialist can then set up an inspection of your attic, crawl space, garage and exterior.