Protect your customers and employees health, call 0808 456 7890  or contact us

A field mouse standing on a mossy branch

ConeStop: Stopping rats and mice in their tracks

Harry Wood

A new innovative pest management solution from Rentokil builds on an old idea but addresses an important gap in protecting businesses from rodents. Rats and mice are agile climbers and intelligent enough to find any kind of structural weakness to gain access into buildings when looking for shelter and food. Their agility has caused problems for centuries, from eating and contaminating large amounts of stored food to finding their way onto ships and spreading diseases that killed millions of people.

Although the threat of the plague has been reduced to occasional cases or small outbreaks,  rats and mice still cause significant losses to businesses handling food and are carriers of many other diseases that are a greater health threat in modern times.

A Rentokil study collating data from 51,000 customer sites found up to 40% of businesses handling food reported pest incidents and 52% of these were caused by rodents.

prevent rats and rodents

Rodent control is an essential component of food safety practices, and a legal requirement, therefore businesses need to implement effective measures to comply with the legislation and prevent financial and reputational loss. Rentokil innovations such as the PestConnect system are helping customers control pests on the ground in ever-more effective ways.

3D rodent highways

Modern buildings and even ships provide complex three-dimensional highways for rodents to run along to seek food and find places for shelter. Electricity and communications cables, pipes and ducting provide ready-made routes for rodents to get around buildings.

Rats and mice also need to gnaw constantly to wear down their teeth, which don’t stop growing. Soft materials such as the plastic covering of electric cables are perfect material for their gnawing, but when they reach the copper inside, the exposed wires can short, resulting in fires. Preventing rodents from accessing cables therefore, plays an important role in fire safety measures.

Old cone-cept for preventing rats

The idea of using a disc or cone-shaped object to stop rats and mice from accessing food stored in buildings is not new. In fact, it dates back hundreds of years: mushroom-shaped stone posts, called staddle stones (or steddle stones) were used as foundations for granaries in England and Spain from at least the 18th century many of these buildings still survive.

Disc or cone-shaped rat guards have also been used on ships for many decades, to stop rats and mice running along mooring ropes into the ships. They were not widely used, however, until the early twentieth century.

After the bubonic plague was introduced into West Coast ports of the US, some of the ports introduced their own requirements for ships entering port. Though it wasn’t until 1951 that pest control on ships became a requirement under international law when the WHO introduced the International Sanitary Regulations that required ships to have Deratting Certificates.

ConeStop-ping rats and mice in their tracks

The ConeStop is an adaptable plastic cone that effectively blocks rats and mice from running along pipes and cables, preventing rodents from accessing and contaminating sensitive areas in business premises.

Rentokil adapted the simple rigid cone into a product that can easily be adapted to fit a wide variety of pipes, cables and even rectangular ducting. ConeStop is a circular piece of flat plastic with a V-shaped piece removed so that when the two edges are tied together, it forms a cone. It has flexible fingers in the centre that, when wrapped around pipes or cables, bend around the diameter leaving no gaps.

Successful rat barriers

Rentokil customers in multiple countries have tested ConeStop on their business premises. They reported that it successfully stopped rats from travelling along pipework and cables and that the cones were not gnawed at. ConeStop has now been granted two European Registered Community Designs; one for the full cone, used on suspended pipes, cables and posts, and the second for a half cone, designed for cables and pipes attached to flat surfaces.

Robert Shand, Pest Control Project Technologist at Rentokil’s Global Research and Development Centre said, “We are extremely pleased with the outcome of the customer trials. For such a simple design it will have a great impact on keeping both rats and mice contained and preventing them from accessing other parts of customer premises.”

Harry Wood
Harry Wood

I am a Content Communications Editor at Rentokil Initial, writing content for all our marketing activities on topics as diverse as pest control, pest-borne diseases, food safety, climate change, wellbeing, hygiene and airborne diseases. I've been an editor and writer for over 30 years in academic and business roles. I started life in the Forestry Commission, moved into tropical forestry and environment in Thailand before migrating to the world of healthcare IT and medical technology back in the UK. My role at Rentokil Initial has given me the chance to return to some of my roots when writing about wood-boring insect pests ... or is that boring Wood writing about insect pests?


  1. Wow!! Thanks for such an interesting article Harry. I had no idea about these different methods against rats! I’m gonna have to share this

  2. Our society is interested in fixing cones on exterior pipes to stop rats from climbing up. Kindly contact on 9821091349 for further discusdion. Thnx.

  3. Hi Harry,

    I own a small condo unit in a building of 8 condos in Tacoma, WA. We have a rat problem. After 6 weeks of professional exclusion and trapping, activity has been greatly reduced with some unit owners reporting no activity while others reporting some. All known exclusion points have been covered with wire and gaps filled with razor wire and glue. All trees have been trimmed (severely) to at least 3-4 feet from the building and below the roofline. The roof is flat. I suspect — due to living in a city with power lines — that rats might be accessing the building via the wires. A friend mentioned hearing of a type of cone used to keep rodents from accessing buildings via power lines. A quick search turned up your article about a similar type of cone. Would this type of cone work? Are there other, smaller cones designed for electrical wires stretched between power poles and buildings? Who would I contact to install this type of cone if it exists and is affordable?

    Thanks for your help. Please feel free to respond to my email address when you have time.


  4. Hi I have a possum problem and he/she walks my power line from my house at night and returns the same way in the morning, do you think this ConeStop will do the job.

  5. Why is that mice nowadays are getting smarter? There is one roaming in my room. I used mouse trap to catch it. I put small pieces of food in the middle of the trap so that the mice will be attracted to go near to the trap. The next day, I check. The food is gone but the mice were not trap. Do mice know it is a trap?

Leave a Reply



Contact the experts

UK: 0808 256 9325
USA: 888 993 4179

Fill out your details and we will call you back