Hey Holper’s!

At Holper’s we get a lot of questions about St. Louis pests! We love your questions because we love bringing peace of mind back to the homes of our customers. With every question we get to share our decades of experience and know-how through our answers. Some of these may be things you have wondered about yourself!

General Pest Control FAQ’S

  • Are there dust mite killers? Every mattress should have a mattress cover to help with this. We sell one that does kill dust mites. At the very least a mattress should have an encasement, washed at minimum every three months.
  • What is the rodent repellent sound? It doesn’t matter what the sound is, it will not be effective.
  • Can bad tuck-pointing lead to pest infestations? Absolutely! Even a tiny opening can create a pathway in for unwanted pests.
  • Can you use newspaper for insulation in walls and attics? Not regular newspaper. However, ground cellulose that has been treated with borates can be used as insulation.
  • What is better for insect removal, lime or sulphur? In short, neither! Neither lime nor sulphur is an approved treatment for insect removal, and the potential risks far outweigh any potential temporary reduction in numbers. Only approved pesticides should be used.
  • How do you hang Christmas lights without using your gutters? This can be accomplished by using shingle tabs attached at the roof line. For your safety, and to save yourself hours and hours of time, call Holper’s Holiday Lights at 314-544-7378 to have your lights professionally installed.




  • How do I kill a bat in the house?  The safest answer is that you don’t. As bats can be rabid, a bite can mean a series of painful injections. Leave the trapping to a professional with the proper safety equipment, training, and experience. Bats must be left intact to be tested for rabies.


  • Are bed bugs contagious? Bed bugs are not believed to transfer any diseases when they bite, so in that sense they cannot be contagious. Possibly the person who asked this question was wanting to know if they are easily spread, and the answer is a huge YES! Bed bugs hitch rides on clothing, purses, diaper bags, backpacks, luggage, etc. If they can crawl in it or on it, they can hitch a ride back to your home from any building with an infestation. Yuck!
  • What can I buy at the store to get rid of bed bugs? Unfortunately, nothing sold over the counter will work on bed bugs. You’ll save money in the long run if you call a professional at the first sign of bed bugs, before you spend money and time trying to do it yourself. Only a professional has the materials, equipment, and know-how to succeed.
  • What do bed bugs look like? Less than ¼” long, adult bed bugs are flat, wingless, oval-shaped insects which are brown in color. Younger bed bugs are lighter in color and tinier. The eggs that bed bugs lay are minute and white in color.
  • How do you get bed bugs? Truthfully, any time you leave your house, you are at risk of picking them up. They hitchhike on clothing, luggage, backpacks, purses, diaper bags, etc. When someone whose home has bed bugs leaves their home, they carry them to the next place they go–fitting rooms, movie theaters, restaurants, hotels, rental cars, offices, friends’ homes–they can go anywhere!
  • Does light prevent bed bugs? Leaving your lights on will not deter bed bugs.
  • How long does it take for you to realize you have bed bugs? This varies greatly by size of infestation and the sensitivity one has to the bites. It can take a month, or in some cases, the whole home becomes infested before someone notices. That’s why it is wise to have a professional do an inspection–catching things early greatly decreases your cost to treat and the time needed to complete the extermination.
  • Can you do a heat treatment on your car for bed bugs?  Holper’s never recommends heat treatments for bed bugs as it doesn’t provide any long-term residual effect. A professional should treat all the cracks and crevices of the car with materials approved for bed bug extermination.
  • How do you get rid of bed bugs in one day/overnight? In short, you can’t. There is no magic wand. Some companies advertise heat treatments as such, but when your belongings are brought back into your home, you are likely just re-infecting your house. With Holper’s, we treat your home and belongings for a complete extermination.
  • Do bed bugs carry disease? They do not carry any known diseases, but some people will have an allergic reaction to the bite. Swelling, redness, and itching can occur, and there is always the possibility of infection and scarring if the bite is scratched.


  • When do bees swarm in Missouri? In our area they swarm in March and April.


  •  What kind of DIY mice pest control works? In theory, everything a professional does for mice control, a DIYer could do, too. The big difference is that a DIYer doesn’t have the trapping experience or knowledge of the pest which is needed in conjunction with using the traps and materials.
  • What do exterminators do to get rid of mice? At Holper’s we use traps inside and rodent stations with a rodenticide on the outside perimeter. We do not use the rodenticide indoors as it could lead to the rodent dying in your walls. The outdoor rodent stations are attractive to mice as they leave your home each day to find food. Eating outside eliminates them dying indoors.
  • What attracts mice? Any building looks inviting to a mouse!
  • Do mothballs get rid of mice? Not only is this not an effective treatment for getting rid of mice, it can be deadly to humans.
  • Do glue boards kill mice? In some cases they can, but it will be in a terribly inhumane way. They should NOT be used for this.
  • How many babies can mice have in a year? One female mouse can have 5 to 10 litters per year. While the average litter is 6 to 8 babies, litters can range from 3 young to 14 young!! No wonder mice populations grow so quickly when untreated!


  • Do moles hibernate? Moles don’t hibernate, they just go deeper in your yard with their systems of tunnels. As the weather turns colder, earthworms go deeper in the earth, and the moles follow their food source. At times moles do come to the surface when there is snow cover, creating surface tunnels in their wake.
  • Are there pet safe mole killers? Trapping is the best way to kill moles, and as the trap is underground, it is safe to pets.
  • Are daffodils a deterrent for ground moles? No, they are not.
  • How often do moles move through the soil? Moles move through the soil every day to get the food they need.


  • Does compost attract rats? It can, but if you have rodent stations around the outside of your house and compost area you can prevent them from becoming an issue.


  • How do I get rid of roaches in my TV? If they are in your TV, then you have a very significant infestation on your hands. Professionally applied and placed bait will be necessary for something of this magnitude.
  • How do you get rid of German roaches? (Are there German roaches?) Yes, there are German cockroaches, whose infestations can be successfully dealt with by a professional. Over the counter sprays and baits are generally not effective. Holper’s approach is multi-phased–we spray, use an insect growth regulator, and different baits to solve the problem. Follow up service will maintain a pest free environment!
  • What causes roaches in a house? Many times roaches will hitchhike into your home in a box. If there is enough of a food supply in your home, they will be happy to stay! Roaches love buildings with multiple food sources, such as an apartment building or an office building. Keeping floors and counters spotless, along with all food secured in containers, will make your place much less attractive to roaches.


  • Do skunks stay in the same area? Yes, they do.


  • Is a black and yellow spider poisonous? No, that is likely an orb spider–perfectly harmless!
  • What type of spider bite gets as big as a golf ball? Several types of spiders can leave welts the size of a golf ball, although it is very rare for any bite to swell to that size. In the St. Louis area the brown recluse spider has the most dangerous bite.


  • Is there a home remedy to get rid of squirrels? The only thing available as a deterrent is keeping your tree limbs trimmed back 10 to 15 feet from the roof line. Again, this is only a deterrent. If a squirrel chooses your home, they are going to find a way in.
  • How do you get squirrels out of the soffit? Squirrel traps baited and set by professionals will accomplish this.
  • How to keep squirrels out of my attic? Keep limbs trimmed back to limit access to your roof. Limit other access points by having a professional check for cracks and openings in the gutter line, roof vents, etc.
  • Is there a home remedy to get rid of squirrels? No, there is not. Squirrels must be  trapped and removed by experts, and all potential entry points to your home should be Professionally sealed. Once that is done, you can deter squirrels from gaining access to your home by keeping limbs trimmed back from your roof.
  • What do squirrels do in the winter? Winter months for squirrels are filled with breeding, eating stored food, and birthing litters.
  • Do cats kill squirrels? They certainly can, although they have to catch one first!


  • Once termites start eating your house, do they leave on their own? No, professional treatment is required to save your home.
  • Can you bug bomb termites? No, that is not a successful treatment for termites.


  • What are the methods for exterminating voles? To exterminate voles where their yard holes are visible, the best method is a restricted-use pesticide, which only licensed professionals can obtain and apply. Traps can be used but are usually ineffective due to the large number of voles in a given area. Rodent stations are successful in keeping the voles under control after the pesticide has been implemented.

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