St Louis Pest Control Blog

House Mouse – Exclusion

Finding all the possible entry points into your home may be the hardest part of exclusion process.  The single dime sized hole that you missed may be the entry hole, and the mouse problems can continue.  But let’s assume that all entry points have been identified, and we are ready to choose the exclusion materials.   One of the best materials made for rodent exclusion is steel wool or copper mesh.  The advantage of copper mesh, over steel wool, is that it won’t rust if used outside.  The reason the steel wool and copper mesh works so well is that when a rodent attempts to gnaw its way through the wire strands, it creates an irritant to the rodents gums.  Also, you want to make sure that you have wedge in the material where the rodent can’t push in or pull it out of place.

Another great material that can be used on larger gaps in hardware cloth.  Make sure you buy 1/4″  or less.  The beauty of hardware mesh is that you can cut it down to any size, angle or opening.  You can attach it by drilling it into wood or use liquid nails to attach to a concrete if needed.  Hardware cloth is very useful with any wildlife control.

Some people have used things like expandable foams and even some caulks in the past with mix results.  I’m sure in some cases this has deterred the rodent from coming back into the house, but in my experiences, if the rodent is determined enough to get back in, it will chew it’s way through the expandable foam and caulk.

Please call us if you have any questions or concerns regarding these pests at 636-343-7900 or go to for more information regarding our service options.

House Mouse – Control

There are a variety of mouse traps that can be used to solve a mouse problem.  The four most commonly used traps for mice are snap traps, glue traps, bait traps and mechanical traps.  Let’s discuss these four a little bit now.

There is a reason why the snap trap has been around for a long time, it’s inexpensive, fairly easy to use and they work.   When using this type of a trap, make sure you place them against the wall with the trip mechanism firing towards the wall so that no matter which way the rodent approaches the trap it can fire of cleanly.  If you use an attractant, make sure it is something that can’t be pulled off, the best lures will cause the mouse to work to get the meal and therefore will cause the trap to be tripped.

Glue traps can be an effective way to control mice, but I would not use this method without combining it with one of the other methods.  When using glue traps, you want to place them as close to the problem area as possible.  The whole design of the glue trap is for a mouse to accidentally run onto one by mistake and get stuck.

Baits are highly effective, but once the mouse has eaten a lethal dose, it can die almost anywhere.  The problem with that is the odors sometime cause an unpleasantness in the home for a day or two.  Bait stations should only be used  in areas that children and pets can not access them.  But the benefit of the bait station, is that it can be placed out prior to a problem to hopefully solve a potential problem before it becomes one.

The last type of trap we will discuss is the mechanical trap.  These traps are designed to take advantage of the mouses curiosity.  Since mice love to explore new things, the mouse will explore this device and once inside it will not allow them to exit.  Once the mouse trapped you have to option to release the mouse back into the wild.  The problem with is, once the mouse has been freed, it may come back into your house and will more than likely now know not to go into a trap like this again.

At Blue Chip,  we use a combination of these methods in the field to gain control of the most difficult situations.  The one things I must stress before anything is done is to do a through inspection.  Finding out how the rodents are getting in and where they are harboring is key to a successful rodent program.

Please call us if you have any questions or concerns regarding these pests at 636-343-7900 or go to for more information regarding our service options.


House Mouse – Prevention

How to prevent mice from gaining entry into your house.  This is a very common question at Blue Chip Pest Services, especially around this time of the year.  As I mentioned in the last blog, once it starts to get colder out and mice no longer have a good food source, they tend to look in areas that they hadn’t explored as of yet. Yes, your house is a prime target.

Preventing a mouse from gaining entry isn’t as easy as you might think.  Mice have some excellent survival techniques that allow them to access areas that we might not even think of.  For example, they are excellent climbers; they can climb up a concrete foundation and tuck under your siding or continue climbing the brick all the way up to your soffit area for entry.  They also have the ability to squeeze through small openings.  Any hole they can fit their head into the body will contort and follow.  So, with information in mind, you really have to inspect your exterior thoroughly to find any and all possible entry points.  Although, sometimes that isn’t enough.

So. let’s get onto the prevention part.  There is no such thing as a rodent repellent spray. (Note: if you are a chemist, you know what your meal ticket can be.) The only way you can prevent mice from getting into your house is to protect it from the outside.  This can be done with exterior rodent stations.  The bad news for consumers is the government has restrict the sale of over-the-counter bait blocks because some consumers failed to use them properly and therefore caused poisoning with non-targeted animals.  At Blue Chip we offer services for those customers who already have exterior station but can no longer buy the materials to refill them; as well as for new customers who want to protect their home for rodent issues.

Please call us if you have any questions or concerns regarding these pests at 636-343-7900 or go to for more information regarding our service options.

House Mouse

With summer slowly coming to an end, some outdoor pests will be looking for new food supplies and shelter.  One of the most common pests to do this is the House mouse.

The House mouse is perfectly happy during spring and summer living outside.  There are are plenty of insects and plants seeds for them to feed on.  However, when the cold weather starts move in, most insects will start to die off and plants are no longer producing seeds; which leaves the House mouse without any fresh food supplies.  Naturally, this will cause any rodent to seek a new supply of food.  Unfortunately for us, the nearest food supply can end up being in our home.

We will continue this blog on the House mouse with a series of blogs on come that will discuss Prevention, Control and Exclusion.


Please call us if you have any questions or concerns regarding these pests at 636-343-7900 or go to for more information regarding our service options.

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