Bird Free is an advanced method of bird control based on the science of bird behaviour.
Bird behaviour is instinctive. It is conditioned by basic needs: food and water, shelter, warmth, security (from predators). By means of sensory stimuli that alter birds’ instinctive responses, Bird Free:
- Changes birds’ behaviour (rather than acting as a physical barrier)
- Causes resident birds to abandon long-standing habitats
- Shows immediate results
- Eliminates severe infestations
- Is proven to be effective for up to 5 years
- Causes no harm to the birds themselves

Invicta’s Bird Control Process
Investigation
Invicta will attend your site to investigate what species of bird is causing you issues. We will listen and understand exactly what you would like to achieve in controlling the bird issue on site.
Recommendations
We will produce a detailed survey report which will outline what we recommend to keep your site bird free. Within the report we will include costs to carry out each of our recommendations.
Attendance
Once works have been agreed with yourself, we will agree a date of attendance convenient with yourself. Risk assessments, Method statements & Training certification will be sent over before we attend site.
Completion
Our Fully trained bird control teams will attend site to complete the work agreed. We will then invite the site contact to inspect the work and a detailed report will be emailed over to show that all works have now been completed.
How it works
Bird Free is a pigeon repellent formulated to stimulate three senses of the bird: sight, smell and touch. These three stimuli combine to create avoidance learning in birds.
Sight
Bird Free’s proprietary gel mixture contains pyranine, the same colouring agent used in highlighters. This fluoresces when excited by UV radiation, causing the gel to glow with ultraviolet light. Invisible to humans, the UV light creates an impression on the bird similar to shimmering fire (hence the name Fire Gel™), causing it to avoid landing on surfaces treated with Bird Free. This avoidance reaction is observed immediately after Bird Free is applied.
Smell
Bird Free contains peppermint oil, long known as an effective bird repellent. Studies have shown that the menthol contained in peppermint derivatives acts as a primary repellent in birds due to its action on olfactory and trigeminal nerve endings located in the bird’s nose, mouth and eyes. (The trigeminal nerve is closely related to the olfactory nerve. It conveys facial sensations to the central nervous system.) The odour quality and pungency of the menthol is sensed by the olfactory and trigeminal systems of the bird, respectively, and creates a strong aversion response.
Synergy between visual and olfactory stimuli:
In effect, these two stimuli, visual and olfactory, act together in synergy, warning the bird not to approach. As a result, birds quickly learn to keep away from surfaces treated with Bird Free repellent.
Touch
While most birds are deterred by Bird Free’s visual and olfactory stimuli and will not come into contact with the gel, where nests have been removed and treated with Bird Free a nesting bird will often be seen attempting to return to the nesting site immediately after Bird Free has been applied, causing it to touch the gel, which is very sticky.
Due to the gel’s high viscosity the bird will not be harmed. However, birds abhor anything sticky on their feathers, so the bird only needs to touch the gel once and it will never return.
Call one of our experts to discuss your Bird-Free application, we are happy to help.