How To Stop A Bed Bug Infestation
During Peak Season
Is there such a thing as “bed bug season?” Entomologists are often asked if bed bug infestations are higher in the summer? Bed bugs survive and thrive throughout the year, but there is a particular time during each year when bed bug calls are more common. Typically, PMPs see bed bug “season” peak in the months of August and September when most families are returning from their summer travels.
Bed bug “season” normally begins at the end of spring each year and ends at the beginning of the month in November. Bed bugs do not reproduce faster this time of year, simply put, it often takes some time before people start to notice they’ve got a problem. Small infestations are easy to miss and often go unnoticed. Once both infestations and the bugs themselves grow, they become more conspicuous.
The common bed bug, Cimex lectularius, has a long, well documented history of resistance to insecticides. Resistance is defined as “a heritable change in the sensitivity of a pest population that is reflected in the repeated failure of a product to achieve the expected level of control when used per the label recommendation for that pest species.” Resistance is more common in populations with a quick generation time, such as house flies, fruit flies, German cockroaches, and bed bugs. It is less common in insects with long generation times as well as social insects such as ants and termites.
Let’s take a minute to explore how insects, and specifically bed bugs, develop resistance to insecticides. As we know many PMPs find themselves in situations where their bed bug applications are having little to no effects on the population. Pests have several tools they use to overcome exposure to insecticides.
Metabolic detoxification by multistep enzyme systems is the most common method used to detoxify chemicals inside insect bodies. Resistant insects may quickly flush the pesticide out of the body or they are able to detoxify or destroy the toxin faster than susceptible insects by using internal enzyme systems to break down insecticides. Resistant strains often have more of these enzymes or they may work faster/better than within the susceptible strains. In addition to being more efficient, these enzyme systems also may work across many types of insecticides with different modes of action.
Another method insects, and specifically bed bugs, have been shown to use, is thickening of their outer exoskeleton. Several studies have shown a connection between a thicker cuticle and a decreased response to insecticides. These thicker outer layers may reduce absorption of the pesticides into the insect body.
Behavioral resistance is a third type of resistance; this is when the pest changes its behavior to avoid being harmed by the pesticide. This type of resistance is not believed to be affected by the same selection pressures as the first two types, and is the most difficult type of resistance to anticipate in integrated pest management programs.
The final type of resistance is target site alteration. This type of resistance occurs when the target site where the pesticide binds in the insect's nervous system is altered or changed in some way, typically via a genetic change. Simply put, this method of resistance is similar to changing the locks on a house -- they key will not work anymore.
We, as an industry, have tried everything we can think of at them in our control efforts. We’ve applied every class of insecticide currently labeled, and used mechanical traps, heat, steam, cold, fumigation, IGRs, mattress covers, as well as natural control methods. Unfortunately for us, bed bugs continue to prevail as one of the most difficult pests to control.
When developing a control program for a customer, the first step is the inspection phase – we must determine the following:
For me personally, when performing bed bug inspections, I try to think of them like blood sucking German cockroaches. The bed (and or the person(s) that sleeps in the bed) is the “moisture” source we always focus on when inspecting for cockroaches and then we go out from there. Typically, in low level infestations, I find them less commonly on the mattress or mattress ticking, but more commonly in and under box springs and bed frames. I think this is due to the decreased amount of disturbance these areas have from cleaning and linen changing.
When inspecting, I always remember the 80/20 rule… I spend 80% of my time looking for 20% of the insects! Most of this 80% of time is spent looking for mated females. Due to the nature of how bed bugs mate, females typically leave the general population and “hide” in another area. I’ve found females 12-15’ away from the main population and where the food source slept.
When we begin to discuss control options, the first thing many people want to do is discard their belongings, including mattresses and box springs. This is not necessary. I recommend investing in a high-quality mattress and box spring encasement rather than replacing the whole kit and caboodle. These items make future inspections faster and easier. Plus, if treatment is not thorough, if the treatment fails, or new insects are brought in a new mattress or box spring will just get infested anyway.
Summertime is the time for family vacations, so do all you can to educate your customers about how to avoid bringing home more than memories and souvenirs. Above is an infographic created by NPMA, and is a great resource to share with your customers as they head out on their summer vacations.
Tips & Tricks: Pricing Out a Bed Bug Job
Be sure you are charging enough for the work you are performing, especially bed bug work. Your professional training, knowledge, skills and experience should demand top dollar. Here are some things to consider the next time you price a bed bug job:
- The overall size of the area that needs to be treated
- The level of infestation
- The number of items in the area to be treated (furniture, clutter, etc.)
- As most bed bug infestations are not severe, they require more time to be spent on the investigation stage; this takes time and you should be compensated for the time you invest in each account
- Specialized equipment such as steamers, dusters, and foamers, may need to be purchased
- Integrated Pest Management tools such as mattress encasements, bed bug traps and monitoring devices as well as specialized insecticides may need to be purchased
Bed bug treatments are not an everyday job and shouldn’t be priced that way!
2 IGRs Are Better Than 1 - How To Kill Bed Bugs the RIGHT WAY
PMPs no longer need to rely on rotating chemicals when treating for bed bugs. CSI offers a Pressurized Solution formulated with CSI’s Combination Chemistry® that is changing the game in pest control. Just what is Combination Chemistry®, the formulating of products with multiple active ingredients, with different modes of action, creating unique proprietary products for industry professionals like yourself to address pest problems.
D-Fense NXT boasts not one but three active ingredients; 0.20% Novaluron for lasting residual control, 0.06% Deltamethrin for a quick knockdown and 0.02% Pyriproxyfen as an insect growth regulator all rolled into one state-of-the-art aerosol.
D-Fense NXT is unique because it delivers multiple benefits. Only one product purchase is needed, rather than multiple products to carry in a vehicle. PMPs can purchase D-Fense NXT to achieve fast results and long-term control of troublesome bed bug and cockroach infestations, as well as many other listed pests.
Mortality of Bed Bugs after Direct Application
Mortality of Bed bugs, Cimex lectularius, Field Collected, after exposure to D-Fense NXT
Bedlam is a registered trademark of McLaughlin Gormley King Company
Temprid is a registered trademark of Bayer CropScience LP
Snell Scientifics, 2017.