ConeStop: New trick to stop rats and mice

rat and mouse control

A new innovation from Rentokil builds on an old idea but plugs an important gap in protecting businesses from rodents.

The ConeStop is an adaptable plastic cone that effectively blocks rats and mice from running along pipes and cables.

Threat to businesses

Rats and mice are agile climbers and intelligent enough to find any kind of weakness to get into and around 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  (it is treatable with antibiotics if given quickly), 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.

A white paper on global food safety

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.

The ConeStop provides one more weapon in the fight to prevent rodents accessing and contaminating sensitive areas in business premises.

3D highway

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.

Internal structures create highways for rodents

The internal structure of factories provides 3D highways for agile rodents to run around safely

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 common targets for their gnawing, but when they reach the copper inside, the exposed wires can short resulting in fires. Preventing rodents from accessing cables is, therefore, also an important fire safety measure.

Old ‘cone-cept’

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 goes 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 (1). 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.

New trick: ConeStop

Rentokil has now 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 the cone is wrapped around pipes or cables, bend to adapt to the diameter and leave no gaps.

cone stop: rodent control solution

Successful rat protection

Rentokil customers in six countries have tested ConeStop on their 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, for suspended pipes, cables and posts, and the second for a half cone, which is for cables and pipes attached to flat surfaces.

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

***Please note that this ConeStop solution is not yet available globally. Please contact us to discuss further and find out more about our other innovative products***


  1. Sweeney K. Stowaway rats, modern biohazards point to need for health inspections aboard ships.  2013.

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