How to Get Rid of Rats: Complete Guide for Homeowners (2026)

Last updated: March 3, 2026

By James — 25-year pest control industry veteran

Rats are among the most destructive household pests, and knowing how to get rid of rats starts with understanding which species you are dealing with and how they are getting inside. Unlike mice, rats are cautious and intelligent, which makes them harder to trap and eliminate. A single pair of rats can produce up to 40 offspring per year, so early action is critical.

This guide covers how to identify a rat problem, the differences between Norway rats and roof rats, effective DIY removal methods, when professional help is necessary, and how to prevent rats from returning. For detailed pricing information, see our rodent exterminator cost guide.

Signs You Have Rats

Rats are primarily nocturnal, so you may have a rat problem long before you actually see one. Recognizing the early warning signs helps you act before the population grows and damage becomes extensive.

• Droppings. Rat droppings are capsule-shaped and 1/2 to 3/4 inch long, significantly larger than mouse droppings. Fresh droppings are dark and moist; older ones turn gray and crumbly. You will typically find them along walls, behind appliances, in attics, and near food sources.
• Gnaw marks. Rats gnaw on wood, wires, pipes, and plastic to keep their constantly growing teeth worn down. Look for rough-edged chew marks on baseboards, door frames, electrical wiring, and PVC pipes. Rat gnaw marks are noticeably larger than those made by mice.
• Grease trails. Rats follow the same paths repeatedly, and their oily fur leaves dark smears along walls, baseboards, pipes, and beams. These grease marks, sometimes called rub marks, indicate established travel routes and help identify high-activity areas.
• Scratching noises at night. Scratching, scurrying, or squeaking sounds in walls, attics, or ceilings after dark are a strong indicator of rat activity. Roof rats are especially active in attics, while Norway rats tend to make noise in lower levels and basements.
• Burrows in the yard. Norway rats dig burrows in soil, typically near foundations, along fence lines, under concrete slabs, and beneath garden debris. Burrow entrances are 2 to 4 inches in diameter with smooth, packed edges. Finding burrows near your home's foundation suggests rats may be entering the structure.
• Nesting materials. Rats shred paper, insulation, fabric, and dried plant matter to build nests. Finding piles of shredded material in hidden areas such as behind appliances, in attic insulation, or inside wall voids indicates an active nest.

If you notice two or more of these signs, you likely have an active rat problem that needs prompt attention.

Norway Rats vs Roof Rats

The two most common rat species in U.S. homes are Norway rats and roof rats. Identifying which species you have is important because their habits, entry points, and preferred habitats differ. The wrong approach can waste time and allow the population to grow.

Norway rats are more common in northern and coastal states, while roof rats are prevalent in the South, Southeast, and Pacific Coast. In some areas, both species may be present, though they rarely occupy the same space within a structure.

DIY Methods to Get Rid of Rats

For a small rat problem (one to three rats spotted, droppings in one area), DIY methods can be effective when applied correctly. Rats are more cautious than mice, so trapping requires more patience and strategic placement.

Snap traps (most effective DIY option)

Snap traps are the most reliable DIY method for rat removal. Use rat-sized snap traps, not mouse traps, as mouse traps are too small to kill rats effectively. Place traps perpendicular to walls with the trigger end facing the baseboard, since rats travel along edges and walls rather than through open areas.

Bait traps with peanut butter, bacon, or dried fruit. For the first two to three days, leave traps baited but unset so rats become comfortable feeding from them. This overcomes neophobia, the wariness rats have toward new objects in their environment. After the pre-baiting period, set the traps. Place at least six to ten traps along walls where you have found droppings, gnaw marks, or grease trails. Check traps daily.

Seal entry points (exclusion)

Trapping alone will not solve a rat problem if new rats keep entering. Rats can squeeze through gaps as small as 1/2 inch. Inspect the exterior of your home for cracks in the foundation, gaps around pipes and utility lines, spaces under doors, damaged soffit vents, and openings around roofline intersections.

Seal gaps with steel wool held in place with caulk or use hardware cloth (1/4 inch mesh). Rats can chew through most materials, but steel wool and metal mesh resist their teeth. For larger openings, use sheet metal or concrete patch. Pay special attention to where utility pipes and wires enter the home, as these are among the most common entry points.

Remove food and water sources (sanitation)

Eliminating access to food and water makes traps more effective and discourages rats from staying. Secure all garbage cans with tight-fitting lids. Store pet food in sealed metal or heavy plastic containers. Clean up fallen fruit from trees. Remove birdseed from ground-level feeders or switch to rat-resistant feeder designs. Fix leaky outdoor faucets and eliminate standing water.

Indoors, store pantry items in sealed containers, clean up crumbs and spills promptly, and avoid leaving pet food out overnight.

Why Poison Is Risky

Rodenticide baits (rat poison) are widely available but come with significant risks that make them a poor choice for most homeowners.

• Secondary poisoning. When a poisoned rat is eaten by a pet, hawk, owl, or other predator, the poison transfers to that animal. Secondary poisoning is a leading cause of death for raptors and other wildlife in residential areas.
• Rats die in inaccessible locations. Poisoned rats often retreat into walls, attics, or crawl spaces before dying. A decomposing rat in a wall cavity creates an intense odor that can last two to four weeks and is extremely difficult to locate and remove.
• Does not address entry points. Poison kills individual rats but does nothing to prevent new ones from entering. Without sealing entry points, the population is simply replaced by new rats from outside.
• Safety risk for children and pets. Despite tamper-resistant packaging, accidental exposure to rodenticides remains a concern, especially with children and curious pets. The EPA has restricted the sale of certain second-generation anticoagulant rodenticides to licensed professionals due to these risks.

For these reasons, snap trapping combined with exclusion is the safer and more effective approach for most residential situations.

When to Call a Professional

DIY methods can handle a small rat problem, but several situations call for professional intervention. Consider calling an exterminator if any of the following apply.

• Large population. If you are finding droppings in multiple rooms, hearing noises in several areas of the home, or catching rats consistently without the activity slowing down, the population likely exceeds what DIY trapping can manage.
• Rats in walls or attic. Rats nesting inside wall cavities, attic insulation, or crawl spaces are difficult to reach with standard snap traps. Professionals have the tools and access techniques to trap rats in these locations effectively.
• Repeated re-entry after sealing. If rats keep finding new ways into your home after you have sealed visible gaps, a professional inspection can identify entry points that are easy to miss, such as gaps behind siding, deteriorated roof flashing, or openings in soffits.
• Potential structural damage. Rats chewing on electrical wiring, plumbing, HVAC ducts, or structural wood can cause costly damage. If you see evidence of significant gnawing on wires or pipes, professional assessment and remediation are warranted.

For general guidance on evaluating whether DIY or professional treatment is the right call, see our guide on when to call an exterminator.

Professional Exclusion and Trapping

Professional rat removal combines inspection, trapping, and exclusion into a comprehensive program. The most effective companies focus on sealing entry points (exclusion) rather than relying solely on trapping or baiting, because exclusion is the only method that provides long-term results.

Many companies offer a warranty on their exclusion work, typically covering re-entry through sealed points for 6 to 12 months. When comparing quotes, ask whether the price includes follow-up visits and what the warranty covers. For a complete breakdown of pricing by service type and home size, see our rodent exterminator cost guide.

Prevention Tips

Once rats have been removed, ongoing prevention is essential to avoid a repeat infestation. Rats are persistent and will return if conditions remain favorable. These steps address the food, water, shelter, and access points that rats need.

• Seal all gaps larger than 1/2 inch. Inspect the exterior of your home at least twice a year (spring and fall) for new cracks, deteriorating sealant, and gaps around pipes and vents. Use steel wool, hardware cloth, or metal flashing to seal openings.
• Trim tree branches at least 4 feet from the roof. Roof rats use overhanging branches as bridges to access rooflines, gutters, and soffit vents. Keeping branches cut back eliminates this pathway.
• Store food in sealed containers. Keep pantry staples, pet food, and birdseed in airtight metal or heavy plastic containers. Never leave food out overnight, including pet food bowls.
• Fix leaky faucets and eliminate standing water. Rats need water daily. Repair dripping outdoor faucets, fix leaky hose bibs, and eliminate standing water in plant saucers, clogged gutters, and low spots in the yard.
• Remove yard debris and clutter. Woodpiles, leaf piles, dense ground cover, and stored materials near the foundation provide shelter and nesting sites for rats. Keep a 2-foot clear zone between landscaping materials and the foundation.
• Secure garbage cans. Use trash cans with tight-fitting lids and keep them on hard surfaces rather than dirt. Wash cans periodically to reduce odors that attract rats. Bring cans in promptly after collection day.

For a complete overview of pest control pricing and service options, visit our pest control cost guide.

Frequently Asked Questions