Dog Scent Detection

Dog scent detection is a finely tuned discipline that combines a dog’s natural olfactory abilities with human guidance and carefully designed tools. As the field has grown, so too have the products and methods used in training. Trainers each bring their own perspectives and preferences, and while some opt for high end professional equipment, others turn to creative DIY alternatives made from everyday plastic items such as bird feeders, golf tees, and even plumbing fittings.

The rise in the use of plastics has also brought a surge in commercially produced, injection moulded plastic products. These are often inexpensive, lightweight, and durable but not without drawbacks. Many of these items are developed without regulation or thorough testing for long term use in scent detection, raising concerns about their safety and effectiveness.

Plastic is undeniably versatile. It’s easy to shape, durable under rough conditions, and cost-effective to manufacture. However, when it comes to scent detection, not all plastics are created equal. Many contain chemical additives such as plasticizers, fillers, and mould release agents. Over time, these substances can leach into the environment, potentially interfering with a dog’s sensitive olfactory system.

Dogs process smells with extraordinary precision. Their noses contain up to 300 million olfactory receptors compared to about six million in humans and a significant part of their brain is dedicated to analysing scent. With such fine-tuned sensitivity, it’s critical to consider how environmental factors, like chemical off gassing from plastics, might disrupt their performance.

To date, no long term research has been conducted into how these leaching chemicals affect detection dogs. There’s also concern that certain plastics might absorb target odours, leading to inconsistent results or false positives during training and testing.

At Scent Detection a division of Central Engineering Design Ltd we’ve taken a different path. We understand the importance of reliable, dog safe equipment in scent detection work. That’s why our Kong hides are made from solid, food grade plastic with low moisture absorbency machined from dry billets rather than injection moulded. These hides are designed to withstand repeated use while preserving scent integrity.

Similarly, our REST vapour system filters and their associated filter tubes have undergone testing by DSTL and received approval from the Department for Transport, ensuring they meet rigorous safety and performance standards.

We also recognise the demand for durable, long-lasting alternatives to common plastic tools. Our stainless steel bird feeders are reusable, easy to sterilize, and built for heavy-duty use—making them ideal for long-term dog scent detection work.

To further support the development of consistent, reliable training environments, we’ve developed tools like the eight-arm portable NCTAS carousel, featuring one metre spacing and an anti-rotation lock. This design not only improves usability but also supports accreditation standards such as NCTAS (National Canine Training and Accreditation Scheme).

Paired with our NCTAS floor stands, which include stainless steel joiners to ensure precise alignment, these tools offer a level of consistency and standardisation that’s essential in professional scent detection programs. Developed in collaboration with government agencies, our equipment is now helping to bring structure and reliability to scent detection schemes across the UK.