Is Your In-Wall Pest Control System Working?

You know your home has an in-wall pest control system. Maybe the builder mentioned it when you moved in. Maybe you spotted the small port boxes on your exterior walls and put it together. Either way, here you are years later, still seeing the occasional ant on the counter or spider in the basement, wondering whether the system in your walls is doing anything at all.

For a lot of homeowners who have one of these systems, the honest answer is that it probably is not. Here is how the system works, why so many of them sit dormant, and what you can do about it.

What the System Is Supposed to Do

An in-wall pest control system is a network of thin tubes installed inside your walls during construction. The tubes run through the wall cavities where pests travel and hide, and they connect to service ports on the outside of your home. When the system is serviced, a technician attaches equipment to those ports and pushes treatment through the tubes, releasing it into the walls rather than into your living space.

You may know the system by a brand name. The most common one on St. Louis-area homes is Taexx, sometimes called "tubes in the wall." The design is reasonable: put the treatment where pests actually are, and keep it out of the spaces where your family spends time.

Why Yours May Be Doing Nothing

Here is the part that catches most people off guard. Having tubes in your walls does not mean anything is happening inside them. An in-wall system is completely inert until someone charges it with treatment on a regular schedule. No service means no protection, no matter how good the infrastructure is.

There are a few common ways homeowners end up with a dormant system. Very often the system was installed by the builder and simply never activated, because turning it on required signing up for a separate service plan after move-in, and life got busy. Sometimes the previous owner had it serviced, but the plan lapsed when the house changed hands and nobody restarted it. And sometimes service just quietly stopped, with visits getting less frequent until they disappeared altogether.

If any of that sounds familiar, the takeaway is simple. The tubes in your walls are not protecting you right now. They are empty lines waiting to be put to work.

Is the System Still Good?

This is a fair question for a system that has sat unused for years. The tubes are made of polyethylene and run through the wall cavities, and over time a few things can go wrong. Tubing can kink at a corner, lose pressure, or get pinched during a renovation. When that happens, any part of the network past the problem stops receiving treatment.

The only way to know is an inspection. Someone needs to check that the ports are intact and the system still holds pressure before assuming it can be put back into service. In many cases it can, and reviving what is already in your walls is far simpler than starting from scratch. In some cases the tubing is too compromised to rely on, and you are better served by a different approach. A good pest control company will tell you honestly which situation you are in.

Are the Materials Safe for My Family?

The whole point of treating inside the walls is to keep the material away from the spaces where your family actually lives. When a system is serviced correctly, the treatment is released into the wall cavity, not your kitchen or your kids' rooms.

Our view at Pure Pest + Lawn is the same for a wall system as for any other treatment. Chemicals are not the villain. Careless, indiscriminate application is. The U.S. Environmental Protection Agency's integrated pest management principles describe a targeted approach that uses the least material necessary to solve the actual problem, and that is exactly the standard your system should be held to. The University of Missouri Extension's integrated pest management program offers Missouri-specific guidance for homeowners who want to understand how responsible treatment decisions are made.

A system treated blindly, on a rigid schedule, with no one looking at what is happening at your home is not doing you any favors. A system treated thoughtfully by someone who inspects first is a genuine asset.

What to Do With Your System

If you have an in-wall system, you have a few honest options. You can have it inspected and put back into regular service so it does what it was built to do, which is exactly what our team does with in-wall systems. You can pair it with an exterior program for more complete coverage. Or, if the tubing turns out to be too damaged to trust, you can move to a standard treatment plan instead.

What you should not do is keep assuming the system is protecting your home when nobody has touched it in years. That is the most common situation we run into, and it leaves homeowners believing they have coverage they do not actually have.

The Plan

Putting your in-wall system back to work is straightforward.

  1. We inspect what you have. We check the ports, confirm whether the tubing still holds pressure, and tell you honestly whether it is worth reviving.

  2. We build a plan around your home. That may mean servicing the tubes, adding an exterior program, or recommending a better path if the system cannot do its job.

  3. You stop guessing. Your home is protected on a schedule you understand, by a local team you can reach.


Pure Pest + Lawn has protected St. Louis homes since 1933, with more than 1,000 five-star reviews and the BBB Torch Award for Ethics. We know these systems, and we know St. Louis homes.

Have a system in your walls and no idea if it is working? Let us take a look. Call 314-222-PEST (7378) or schedule online and we will give you a straight answer.

Looking for professional pest control?

Looking for professional pest control?

Let our team take care of your St. Louis area property to ensure your pests leave for good.

Looking for professional pest control?

Let our team take care of your St. Louis area property to ensure your pests leave for good.

Looking for professional pest control?

Let our team take care of your St. Louis area property to ensure your pests leave for good.