Why Your ILT Lamp Choice Matters More Than You Think

The move from fluorescent to LED in insect light traps has brought clear benefits – but it’s also introduced new challenges that aren’t always talked about.

With fluorescent lamps, there was a level of standardisation that gave pest controllers flexibility. You weren’t typically tied into one specific system or supplier.

With some LED designs, that’s no longer the case.

And it’s here that lamp format – and the difference between universal and non-universal approaches – really starts to matter.

 

Choice shouldn’t disappear after installation

Pest control doesn’t stand still.

Sites change. Contracts evolve. Stock availability shifts. And service visits need quick, practical solutions.

So when a product ties you into a single supplier or a specific replacement route, it can create challenges later on – not at installation, but in day-to-day servicing.

With so much discussion around LED upgrades and fluorescent phase-outs, it’s easy for decisions to become more complicated than they need to be.

Clarity – and keeping options open – has never been more important.

 

Two approaches (and one that keeps you flexible)

In LED insect light traps, there are generally two approaches:

• Point-source systems with integrated LED boards or strips
• Universal lamp formats designed to replace traditional fluorescent tubes

It’s a simple difference, but it has a real impact in the field.

A universal lamp format makes it easier to:

• Work across different trap types
• Replace lamps on-site without compatibility concerns
• Avoid being tied to a single manufacturer

In short, it keeps things moving – especially when time and stock are tight.

 

It’s not just about output

When LED performance is discussed, output is usually the focus.

But in real environments, coverage matters just as much.

Traditional fluorescent lamps created a broad, even glow – something many pest controllers still trust because it works.

Cylindrical retrofit LED lamps are designed to mirror that, spreading light more evenly rather than pushing it in one direction.

That wider coverage helps ensure insects are attracted from across the space, not just directly in front of the unit.

 

Why diffused light often works better

Another factor is how the light is delivered.

Some LEDs – particularly strip-style designs – produce a narrow, directional beam. Without diffusion, this creates a concentrated line of UV light, meaning a flying insect must pass directly through that beam to be attracted.

Diffused lamps work differently.

By spreading UV light more evenly across the space, they create a broader field of visibility – not just a single line or point. In practice, this means insects are more likely to encounter the light from multiple angles as they move through the environment.

Diffused lamps:

• Reduce hotspots
• Improve overall coverage
• Better replicate the familiar fluorescent “glow”

And in real-world conditions, it’s that wider, more consistent spread of UV light that supports a stronger fly catch – not just intensity in one direction – something reflected in independent testing and field experience.

 

The day-to-day reality: stock and servicing

Beyond performance, there’s the practical side of the job:

• Managing van stock
• Handling different trap types
• Getting jobs done in one visit

A universal lamp format helps simplify that by:

• Reducing the number of spares needed
• Making stock easier to manage
• Increasing the chances of a first-time fix

It’s not always the headline feature – but it’s something you feel every day on the job.

 

Keeping your options open

The industry is evolving – from LED adoption to sustainability pressures and cost control.

But one thing remains constant: No one wants to feel locked in.

Products that allow flexibility tend to work better long-term – not just at installation, but years down the line when things need to be replaced, upgraded, or adapted.

 

Why it matters day to day

Most pest controllers don’t want complexity – they want solutions that are reliable, practical, and easy to maintain.

Lamp choice plays a bigger role in that than it’s often given credit for.

Universal LED formats don’t just support performance – they help keep options open, reduce day-to-day friction, and make servicing simpler.

And in a job where time, reliability, and flexibility matter, that can make all the difference.

At Opti-Catch, we’ve taken this approach by designing our LED lamps around universal formats – helping pest controllers move to LED while keeping the flexibility they rely on day to day.