Surveys using Highly Trained Detection Dogs to Sniff out Japanese Knotweed.

What is a Detection Dog Survey?

It’s the most accurate way to determine if Japanese knotweed is lurking hidden beneath the ground or has been deliberately concealed. Working alongside our team of expert surveyors, Environet’s highly trained canine team play a vital role in determining the presence of knotweed where it may not be visible to the naked eye.

Did you Know…

  • In order to declare a property knotweed-free, sellers are now legally required to provide assurances that there is no knotweed anywhere, including beneath the ground, even if there are no visible signs of the plant?
  • If you buy a property that is later found to have Japanese knotweed, it could impact its value by as much as 10%
  • You could be sued if you sell a property with Japanese knotweed without declaring it or if you allow Japanese knotweed to spread from your garden to a neighbouring property?

Call in the Dogs for the Most Reliable Japanese Knotweed Survey Available

Labrador Retriever brothers Mick and Mack and Cocker Spaniel rescue dog Buddy have one vocation in life, which also happens to be their favourite game – finding Japanese knotweed!

The trio have been specially trained to detect Japanese knotweed rhizome beneath the ground and there’s nothing they love to do more, particularly when they’re rewarded with their favourite tennis ball once their work is complete. Dog welfare is of paramount importance so we partnered with RFA Security who are experts in dog training and handling and are fully compliant with BS 8517/2: Code of Practice for Use of Detection Dogs.

Our canine team can cover a garden or development site in a matter of minutes and will indicate by freezing when the scent of knotweed is detected. Exclusively available in the UK from Environet, this is the most precise method available to determine whether knotweed is present and can be carried out at any time of year.

If knotweed is discovered, we will produce a Japanese Knotweed Management Plan detailing options for remedial works. If it’s not, we can provide an insurance-backed guarantee for up to 10 years, giving you complete peace of mind.

How our Detection Dogs can Help you

Home buyers can find out if the property they wish to buy is knotweed-free, giving them the confidence to press ahead with the purchase. This is particularly useful if: the property is located in a high-risk area; is situated close to a knotweed infestation; is being purchased during winter when knotweed dies back; there are suspicions it has been concealed; or where the seller won’t give any assurances e.g. answering “Not known” to the Japanese knotweed question on the TA6 form.

Home sellers can have their property checked, enabling them to provide a high level of assurance to buyers, ensuring there are no nasty surprises further down the line that could disrupt the sale or leave them exposed to a legal claim.

Home owners can be confident that their biggest investment is unaffected by knotweed – and if it’s found, remediate the problem as quickly as possible. Those carrying out extensions or landscaping work can proceed with confidence.

Developers and construction firms can progress safe in the knowledge that a site they wish to buy or develop is not impacted by Japanese knotweed and if it is, put in place a suitable remediation plan.

Our Dogs in the Media

This is Money

As featured in This is Money on 20th June 2021.

Mail Online

As featured in The Daily Mail on 19th June 2020.

The Times

As featured in The Times on 7th June 2020.

Mail Online

As featured in Country Life on 17th June 2020.

peoples friend

As featured in The Metro on 29th May 2020.

The Telegraph

As featured in The Telegraph in September 2021.

BBC South Today

As featured in BBC South Today in August 2021.


As featured in K9 Magazine on 4th July 2020.

south east today

As featured on South East Today June 2020.

south east today

As featured in Your Dog Novemeber 2020.

It’s simply amazing watching the dogs in action. I highly recommend this reassuring service.

I specifically chose Environet for their unique selling point: Mick and Mack. The dogs spent some considerable time investigating every inch of the ground to ensure no knotweed was present.

Environet could not have been more friendly and helpful. They did a really thorough job and provided some excellent advice and reassurance. We’re so glad we called them and would thoroughly recommend the service.

Need a Japanese Knotweed Dog Detection Survey?

Call in the dogs.

Contact Us