A Technical Review of the Nordisk Innovation Rat-Blocker System — and How Training Enables Pest Controllers to Build a High-Value, Low-Maintenance Revenue Stream
By Nordisk Innovation, for publication by the NPTA
Across the UK, sewer-based rat ingress remains one of the most persistent structural pest problems faced by domestic and commercial properties. Ageing drainage networks, shallow gradients, and the rise of non-flushable materials entering the system all create conditions that support rat movement and habitation within pipework.
As a result, proven physical exclusion methods are becoming an essential part of Integrated Pest Management (IPM), especially as reliance on rodenticides continues to decline under CRRU guidelines.
One such exclusion device – and now one of the most widely used in Europe – is the Nordisk Innovation Rat-Blocker, a stainless-steel, reversible, double-gate device designed specifically for long-term installation in sewer pipes. This article explores its engineering features, the best-practice installation approach, and how professional training now enables pest controllers to turn this highly effective product into a profitable and repeatable service offering.
The effectiveness in reducing rat infestations in Denmark has been so remarkable that they are now legislated with Nordisk Innovation’s rat blocker having a 90% market share.
