Pest Control Methods: Fact or Fiction? What Really Works and What Doesn’t
- May 7
- 8 min read
When you discover a pest problem at home or in your business, it is natural to look for a quick fix. A search online will reveal hundreds of pest control “tips and tricks”, from peppermint oil for mice to conkers for spiders, vinegar sprays, ultrasonic plug-ins and DIY wasp nest treatments.
Some pest prevention tips are useful. Others are harmless but ineffective. Some can even make the problem worse.
At Stratton Pest Control, we know that good pest control is not about guesswork. It is about identifying the pest, understanding why it is there, finding how it is getting in and choosing the safest, most appropriate treatment method.
In this guide, we separate pest control fact from fiction, so you can make informed decisions and avoid relying on old wives’ tales when pests appear.
Fiction: Peppermint oil will get rid of mice and rats
Peppermint oil is one of the most common DIY rodent control tips. The theory is that mice and rats dislike the strong smell, so they will leave the property.
Unfortunately, this is not a reliable method of rodent control.
A strong smell may disturb rodents temporarily, but it will not remove the reasons they are there in the first place. If mice or rats have access to food, warmth, shelter and nesting areas, a few drops of peppermint oil are unlikely to solve the problem.
Rodent control usually needs a combination of inspection, proofing, hygiene improvements, habitat reduction and, where appropriate, professional treatment. BPCA guidance on pest prevention also focuses on reducing access to food, water and shelter, which is the foundation of effective pest management.
Verdict: Mostly fiction. What works better: Find entry points, remove food sources, seal gaps correctly and get a professional inspection if activity continues.
Fiction: If you see one mouse, there is probably only one
Seeing one mouse does not always mean there is a large infestation, but it should never be ignored.
Mice are good at hiding. They can nest in wall cavities, loft spaces, kitchens, garages, cupboards and under floorboards. You may only see one, especially if activity is happening at night, but there may be more signs nearby.
Look out for:
Small dark droppings
Scratching sounds in walls, ceilings or under floors
Gnaw marks on food packaging, wood, plastic or cables
Greasy smear marks along skirting boards or pipework
A strong, unpleasant smell
Shredded material used for nesting
The earlier you deal with rodent activity, the easier it is to control.
Verdict: Fiction. What works better: Treat one sighting as a warning sign and investigate properly.
Fiction: Ultrasonic pest repellers are enough to solve a pest problem
Ultrasonic plug-in devices are often marketed as an easy way to repel mice, rats, insects and other pests. They sound appealing because they are clean, simple and require very little effort.
The problem is that they do not address the cause of the infestation.
They do not seal entry points.
They do not remove nests.
They do not remove food sources.
They do not treat established insect infestations.
They also do not provide proof that the pest has gone.
For a serious or recurring pest issue, relying only on plug-in devices can delay proper treatment and allow the problem to spread.
Verdict: Fiction. What works better: Use proper identification, proofing, cleaning, monitoring and treatment based on the specific pest.
Partly fact: Keeping your home clean prevents pests
Good hygiene is very important in pest prevention, but it does not make a property immune.
Food waste, crumbs, pet food, overflowing bins and clutter can all attract pests. Keeping kitchens, food storage areas and bin areas clean will reduce risk.
However, pests can also enter clean properties looking for warmth, nesting sites or access through structural gaps.
Bed bugs, for example, are not a sign of a dirty home. They can be introduced through luggage, second-hand furniture, clothing or visitors. BPCA notes that heat treatment is one method used by professionals for bed bug control.
Verdict: Partly fact. What works better: Keep the property clean, but also check access points, storage areas, lofts, drains, vents and other potential harbourage sites.
Fiction: Bed bugs only live in dirty homes
This is one of the most unhelpful pest myths because it creates embarrassment and delays action.
Bed bugs are not attracted to dirt in the same way that some pests are attracted to food waste. They are attracted to people, warmth and places to hide close to where people rest or sleep.
They can be found in:
Bed frames
Mattresses
Headboards
Skirting boards
Plug sockets
Furniture joints
Soft furnishings
Luggage
Cracks and crevices near sleeping areas
Trying to deal with bed bugs using shop-bought sprays alone can be difficult, especially if the infestation has spread. Professional treatment may involve a combination of inspection, preparation, targeted insecticide use, steam or heat treatment, depending on the situation. BPCA describes heat treatment as a chemical-free method used to treat bed bugs by raising the temperature in affected rooms.
Verdict: Fiction. What works better: Act early, avoid moving infested items around the property and get professional advice.
Fiction: DIY wasp nest treatment is safe if you do it at night
Wasp nests can be dangerous, particularly if they are disturbed. Pouring boiling water, blocking the entrance, using household sprays or trying to knock down a nest can all provoke wasps and increase the risk of stings.
This is especially risky when nests are located in lofts, wall cavities, sheds, garages, roof spaces, bushes or near doors and windows.
Professional pest controllers use appropriate protective equipment, access equipment and approved treatment methods. BPCA advises that established wasp nests that present a nuisance or risk should be handled by a pest management professional with suitable technical knowledge, protective equipment and access to professional-use insecticides.
Verdict: Dangerous fiction. What works better: Keep people and pets away from the nest area and contact a professional pest controller.
Partly fact: Blocking holes will stop rodents getting in
Proofing is one of the most important parts of rodent control. Mice can squeeze through very small gaps, while rats can exploit damaged brickwork, drains, pipe entries, vents and spaces around doors.
However, simply blocking holes without understanding the infestation can cause problems.
If rodents are already inside, sealing the wrong gap at the wrong time may trap them in wall cavities, loft spaces or under floors. This can lead to smells, further damage and distressing issues inside the property.
A professional survey can identify:
How rodents are entering
Whether activity is internal or external
Where they may be nesting
Which proofing materials are suitable
Whether drainage or structural defects are involved
The best order for treatment and proofing
Verdict: Partly fact. What works better: Proofing is essential, but it should be done properly and at the right stage of treatment.
Fiction: Cheese is the best bait for mice
The idea that mice love cheese is one of the oldest pest myths. In reality, mice are opportunistic feeders and are often more interested in foods that are high in sugar, fat, seeds or grains.
More importantly, bait choice is only one small part of rodent control. Successful treatment depends on understanding behaviour, access routes, harbourage, food sources and the extent of activity.
Verdict: Mostly fiction. What works better: Focus on removing food access, identifying routes and using professional monitoring or treatment where needed.
Fiction: Conkers keep spiders away
Many people place conkers around windowsills, doorways and corners in the hope that they will deter spiders.
There is little reason to rely on this as a serious pest control method. Spiders usually enter properties because they are looking for shelter or following other insects. In many cases, spiders are harmless and can even help reduce the number of small flies and other insects.
If you are seeing large numbers of spiders, the better approach is to reduce insect activity, seal obvious gaps, clear clutter and use regular cleaning to remove webs and hiding places.
Verdict: Fiction. What works better: Reduce insect activity, seal gaps and keep undisturbed areas clean and clutter-free.
Fiction: If pests disappear, the problem is solved
Not seeing pests for a few days does not always mean the problem has gone.
Many pests are naturally hidden.
Rodents are often active at night. Bed bugs hide in cracks and crevices.
Cockroaches avoid light.
Fleas may continue developing in carpets and soft furnishings.
Wasps may remain active even if the nest entrance is not obvious.
This is why monitoring and follow-up are often important parts of pest control. A good treatment plan does not just focus on the pest you can see, it looks at the whole environment.
Verdict: Fiction. What works better: Look for fresh signs of activity and follow the recommended treatment plan.
Fiction: Glue traps are a simple DIY rodent solution
Glue traps are not a casual DIY option for rodent control.
In England, it is against the law to use glue traps to catch rodents unless you have a licence.
GOV.UK states that licence holders must be professional pest controllers involved in rodent control, and that licences are for exceptional circumstances where other methods have failed or are not practical.
This is an important example of why pest control should not be based only on products found online or in shops. Some methods are restricted, inappropriate or unsuitable for domestic use.
Verdict: Fiction, and legally sensitive. What works better: Use humane, legal and professional rodent control methods.
So, what pest control methods really work?
Effective pest control is usually based on a combination of methods, not one simple trick.
The right approach depends on the pest, the property and the level of activity, but it often includes:
Correct identification Different pests need different treatments. Mice, rats, bed bugs, fleas, moths, ants, wasps and cockroaches all behave differently, so proper identification is the first step.
Inspection A thorough inspection helps identify where pests are active, how they are entering and what is attracting them.
Proofing Sealing gaps, repairing defects and improving door, pipe, vent and drainage protection can help prevent pests returning.
Hygiene and housekeeping Cleaning, safe food storage, bin management and clutter reduction all help reduce risk.
Habitat reduction Removing nesting sites, overgrown vegetation, waste materials and undisturbed harbourage areas can make a property less attractive to pests.
Professional treatment Where an infestation is established, professional treatment may be needed. This should be selected according to the pest, the property and safety considerations.
Monitoring and follow-up Pest control is often a process. Follow-up visits and monitoring help confirm whether the treatment has worked and whether further action is needed.
When should you call a professional pest controller?
You should consider professional pest control if:
You have seen repeated pest activity
You have found droppings, gnaw marks or nesting material
You can hear scratching in walls, lofts or under floors
You have discovered a wasp nest
You suspect bed bugs, fleas or cockroaches
DIY methods have not worked
The problem is in a business, rental property or food-handling environment
You are unsure what pest you are dealing with
You are worried about safety, children, pets or legal restrictions
Professional pest control is not just about treatment. It is about understanding the cause of the issue and helping reduce the risk of it coming back.
Need pest control advice?
If you are dealing with pests at home or in your business, Stratton Pest Control can help.
We provide professional pest control services across Hertfordshire, Bedfordshire, Buckinghamshire, Essex, Cambridgeshire, North London, Oxfordshire, Northamptonshire, Norfolk and Suffolk.
Whether you have seen signs of rodents, discovered a wasp nest, found bed bugs or tried DIY methods without success, our team can inspect the problem and recommend a safe, practical treatment plan.
Contact Stratton Pest Control today for friendly, professional pest control advice.
