A rat is typically harder to catch than a mouse. Rats avoid anything new on their routes for several days. That delay is normal. It is also the point at which many people give up or turn to poison.
We have put together 10 tips on how to catch a rat in your home, in the order we would do the job ourselves. The method is simple, and it works best with patience and when no step is skipped.
📋 Quick summary: how to catch a rat in your home
- Check it is actually a rat. Rat droppings are 10–20mm long, blunt and raisin-shaped. A mouse trap will not catch a rat.
- Use several rat-sized traps. Place rat traps 1–2m apart where you have found activity, each baited with a pea-sized amount of peanut butter or PestBuddy rat attractant. Our rat control kits contain everything you need to catch rats yourself.
- Pre-bait, then set every trap on the same evening. Leave the traps baited but unset for several nights first.
- No catch after three or four nights? That is normal with rats. Be patient and leave the traps where they are.
- Wear gloves and check traps daily. Double-bag any catch, disinfect the area and never sweep droppings dry.
- Block the way in – drains, air bricks and door gaps. Call a professional if nothing has improved after 2–3 weeks.
1. Understand Rat Behaviour
Rats are cautious animals. A mouse will investigate a new object within a night or two, whereas a rat may avoid it for several days. Rats also keep to the same routes every night. These routes run tight to walls and pipework, and they are where you should place your traps.
Check that you are dealing with rats before you buy anything. Rat droppings are 10–20mm long, blunt at the ends and shaped like a raisin, and they are often found in clusters. By contrast, mouse droppings are 3–6mm and pointed, closer to a grain of rice.
Most people never see the rat itself, and a young rat is easily mistaken for a large mouse. Its head and feet are bigger in proportion and its tail is thicker. Our guide to telling mice and rats apart covers the other signs. If the droppings point to mice, follow our 10 tips on how to catch a mouse instead.
2. Choose the Right Trap
A mouse trap is too small for a rat and is unlikely to kill it. You need a trap built for the purpose, and two types suit most homes.
Rat snap traps are the standard choice. They are reusable and cost little, which matters because one trap is rarely enough. Electronic rat traps kill with a high-voltage shock inside an enclosed chamber, so there is little mess to deal with. They cost more, run on batteries and should only be used in dry places indoors. Our rat control kits are the simplest way to buy the right traps in one order.
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The traps seem to work fine and have already caught a couple of rats and a mouse.
Lewis, PestBuddy customer, Electronic Rat Control Kit
Handle both with care. A rat trap closes with far more force than a mouse trap and can injure a hand or foot badly.
Leave rodent glue traps out of your plans. They are banned in Wales and Scotland, and in England only licensed professionals may use them (GOV.UK). We do not sell them.
We also put traps ahead of poison inside a house. A poisoned rat can die under the floor or inside a wall, where it may smell for two to four weeks. Our guide on when to use rodenticides explains where bait does have a place, and which rat control method is right for you compares every option.
3. Select the Right Bait
Peanut butter is the best all-round kitchen bait for a rat trap. It smells strongly and sticks to the trigger, so a rat cannot carry it away.
Use a pea-sized amount and press it firmly into the bait cup. The rat then has to pull at the bait, and that is what fires the trap. A large portion lets it feed from the edges without touching the trigger.
It also helps to match what the rats are already eating. If they have been raiding the bird seed or the dog's bowl, bait with that. Chocolate spread and tinned fish are good second choices. A dedicated rat attractant is another option, and our own PestBuddy Rodent Attractant Gel is non-toxic, long-lasting and made for use on traps. The full list is in our 10 best baits for rat traps.
4. Place Traps Strategically
Set each trap at a right angle to the wall with the trigger and baited end closest to the skirting. A rat that runs along the wall then meets the trigger from either side.
Spacing depends on how much activity there is. In a hotspot, where you have found droppings or gnawing, place traps 1–2m apart. Along walls and other travel routes, 3–5m is enough. Good positions include the backs of kitchen units, the loft, the cupboard under the stairs and any point where pipes enter the room.
Wherever children or pets could reach a trap, put it inside a lockable rat bait station. Several of our rat control kits pair rat snap traps with lockable bait stations, so each trap you put down is already protected. The largest snap traps should only ever be used in enclosed spaces such as lofts and under floors. Our step-by-step guide on how to set up a rat trap shows the full method.
5. Pre-Bait Before You Set
This step matters far more with rats than with mice. Put every trap in its final position, bait it and leave it unset for several nights. The rats learn that the new objects are safe and that they hold food.
Top up any bait that has been eaten and leave the traps exactly where they are. Bait that disappears overnight is the sign you are waiting for.
The most common mistake we see is impatience: customers expect results too quickly. An untouched trap after three or four nights is normal with rats, and it is no reason to move the trap or change the bait. Lewis, the customer quoted in tip 2, said the same in his review: "The rats will be a bit wary at first, so expect it to take a couple of days while they get used to it."
Setting traps too early also has a cost. A rat that is struck by a trap and escapes will avoid traps from then on.
6. Set Every Trap on the Same Night
Once bait is being taken from most of the traps, set all of them on the same evening. Do it at dusk, because rats are most active after dark.
The first night is your best chance for a high hit rate. Every rat in the house has been feeding from the traps without harm, so none of them is wary yet. That advantage fades as catches are made.
Use plenty of traps. A kitchen with activity along two walls will usually need four to six at the spacing given in tip 4. Bait each trap first, then set it in the place where it will stay. We recommend housing traps in a rat bait station to protect children and pets.
7. Inspect Traps Every Day
Check every trap each morning. A catch should be dealt with promptly, and a trap that has been sprung without a catch needs to be rebaited and reset.
To dispose of a rat, put on gloves, place it in a plastic bag, seal it, place that inside a second bag and put it in an outdoor bin with a lid. Spray the area with disinfectant, leave it for a few minutes and wipe it with paper towel. Droppings should never be swept or vacuumed dry, as this puts particles into the air. Wash the trap in warm soapy water before you reset it.
Keep a short log of dates, trap positions and catches in a book or on a digital device. You are looking for 10–14 days with no fresh droppings and no bait taken. Keep one or two traps in place for another week after that.
8. Always Wear Gloves
Wear gloves whenever you handle traps, bait or droppings, and never touch a rat with bare hands.
The main reason is health. Rat urine can carry leptospirosis, also known as Weil's disease, which enters the body through cuts and grazes. Cover any broken skin with a waterproof plaster before you start and wash your hands when you finish.
Gloves also keep the smell of your hands off the trap. Rats are wary of unfamiliar scents, and with an animal this cautious it makes sense to remove every reason for it to stay away.
9. Tidy Up and Block Entry Points
Trapping removes the rats that are already inside. It does nothing about the food that attracted them or the gap that let them in, so both need attention from the first day.
- Store food, pet food and bird seed in sealed containers, and lift pet bowls overnight.
- Keep bin lids shut.
- Do the big clear-out before you pre-bait. A room that is rearranged in the middle of trapping makes rats cautious again.
- Seal entry points. A rat can pass through a gap as narrow as 15mm.
Drains, air bricks, pipe entries and the gaps under doors are the usual routes in. Pack holes with wire mesh or wire wool and finish with filler or cement. Expanding foam alone will not stop a rat. Rats that return after a successful round of trapping often point to a drain fault, and rat drain products deal with that route. Our guide on how to rat proof your home lists 15 measures in full.
10. Consider a Pest Control Professional
Some rat problems are too large or too risky to handle alone. We would call a professional if:
- activity has not reduced after 2–3 weeks of trapping and proofing;
- signs appear in more than one room, or rats return soon after a full round of trapping;
- anyone in the home is very young, elderly, pregnant or has a weakened immune system.
A qualified pest controller can be found through the British Pest Control Association directory. It costs more than doing the job yourself, and in these situations the cost is justified.
Frequently Asked Questions
What is the best kitchen bait for a rat trap?
Peanut butter is the best all-round bait. Use a pea-sized amount pressed firmly onto the trigger, or match whatever food the rats are already taking.
How many rat traps do I need?
More than one. Place traps 1–2m apart in areas with droppings or gnawing, which may mean four to six for a single room.
How long does it take to catch a rat?
Allow one to two weeks from the day the traps go down. Several of those nights are for pre-baiting, and most catches follow once the traps are set.
Why is the bait gone but the trap has not gone off?
The portion is usually too large or too loose, so the rat can feed without pulling on the trigger. Use less bait and press it in firmly.
Can I use a mouse trap to catch a rat?
No. A mouse trap is too small and too weak for a rat, and it is likely to injure the animal without killing it.
Can I use glue traps for rats in the UK?
No. Rodent glue traps are banned in Wales and Scotland, and in England they are restricted to licensed professionals.
Final Thoughts
To summarise, catching a rat is mostly a matter of patience. Confirm that the pest is a rat, pre-bait for several nights, set every trap together and block the way in. Pre-baiting and proofing take the longest, and they have the greatest effect on the result.
Our rat control kits are the simplest way to get traps and bait stations in one order, and every product in our DIY rat control range is chosen to be effective, fast and easy to use. Our expert guide on how to get rid of rats yourself covers the full 7-step plan if you need more detail.
