No Exterminator Necessary

Modified from © Pests.org

If this blog is successful at achieving only one thing, let it be a widespread understanding that you almost never need a pest control service. Here is your one stop post for how to tell if you need a service, and what you can do instead.

Just Passing Through

Every household, business, and workplace will have the occasional insect or spider visiting. Arthropods are masters at finding their way through the tiniest crack, crevice, hole, or other access point, which they hope will lead them to greener pastures, not indoors. They are not out to get you and they are not a sign that you are in for more creatures like them. It is usually a one-time event. Do not panic and dial up an exterminator.

One recent scientific study found that the average home is occupied, at one point in time or another, by somewhere between 30 and 200 species of insects, arachnids, and related arthropods. Still no reason for fear. In fact, the greater the biodiversity the better. It is a sign that your home is not sterile, but running on all natural cylinders. Most insects are so small you do not even notice them anyway.

The Pest Control "Racket"

While most pest control enterprises are ethical and fair, here are some points to consider:

• The technicians that visit your location are usually not entomologists trained to properly identify pests. They are schooled almost exclusively in proper application of insecticides to insure compliance with state and federal regulations.
• It is in the best interest of a pest control company to identify as a pest any insect that concerns you, regardless of whether it is a pest.
• Most pest control companies require a contract that guarantees repeated visits to your premises. Think about that. We expect plumbers and electricians to do the job right the first time.
• When was the last time a "product" or "service" solved anything? In the case of pest species the answer is almost never. The best solution is prevention and attitude adjustment.

You DO Need a Service When....

There are some situations in which you do need professional help. Those are:

• Bed Bugs are challenging for professionals, let alone do-it-yourselfers, and you will need to find a reputable company to deal with them.
• Structural pests like termites and carpenter ants. Make sure, however, that you are not mistaking an outdoor swarm event for an indoor infestation. A termite inspection is usually a requirement for home sale and purchase. Find an unbiased agent to conduct that inspection. Request an inspection if you suspect a termite or carpenter ant infestation before employing a pest control company.
• Social bee or wasp nest in a troublesome location. Always employ a bee removal service if you find a nest in a location that impedes your day-to-day life. Otherwise, note the location of the nest so you can simply avoid it. In most regions of North America, nests of yellowjackets, paper wasps, and the European Hornet are not perpetual, nor re-used the following year. Feral honey bee hives are perennial.
• Cockroach infestations that have reached extreme population levels. It is important to note that cockroaches have only been implicated in transmission of bacteria, never proven. Prolonged exposure to dense populations of cockroaches, their shed exoskeletons and feces may trigger allergies and asthma in some people, especially children in multi-family dwellings. Insist on a pest control service that uses baits rather than sprays for a longer-lasting, near permanent effect instead of repeated visits to spray insecticides.

The Cure is Prevention

Here are some ways to reduce the potential for pest problems in your home:

• Repair worn weatherstripping on doors and repair holes in window screens (or replace them).
• Seal all cracks and crevices, including around places where pipes and electrical conduits enter or leave the home. Pack steel wool into such situations, use caulking elsewhere.
• Inspect all objects coming indoors from outside, especially plants, firewood, toys, gardening tools....Inspect new plants before you leave the nursery or store.
• Do not reach your extremities into locations you cannot see into. Be careful moving items out of long-term storage to avoid spider bites, disturbing a wasp or bee nest, etc.
• Do not leave clothing, gloves, or footwear outdoors overnight, nor in the garage or shed. It never hurts to shake out shoes and clothes anyway.
• Reduce outdoor lighting or employ motion-sensors or bulbs that are less attractive to nocturnal insects. This will also discourage spiders from stringing their webs across your front and back doors.
• Never stack firewood against the side of your home, as this will help termites and carpenter ants to become established. Reconsider wood mulch as groundcover.
• Learn tips for how to avoid bed bugs in your travels and thrift store shopping. Entomologists estimate that soon one out of every four homes will have bed bugs.

Treatment for You!

Nobody wants to hear the suggestion that maybe they are the source of a problem, but sometimes that can be the case. Please seek professional help if you have phobias of insects (entomophobia), spiders (arachnophobia), or related creatures. It will save you a great deal of money and emotional turmoil to go that route. Otherwise, visit an entomologist for a gentle "attitude adjustment." We can cite example after example of the beneficial qualities of insects and the potentially disastrous effects of continued addiction to chemical pest treatments.

Please feel free to share this post widely. I also welcome comments, even dissenting opinions, as long as they are worded in polite language. Everyone deserves to make a living, and we will always need pest control services for situations where every other alternative has been exhausted.

Antifreeze and Rancid Snails

I should probably issue an advisory with this entry. I thought about including images, but they would be too graphic even for mature audiences. Suffice it to say that science is often (maybe even usually) a dirty, toxic business. I learned that in a convincing fashion over the last two weeks or so while I was processing raw pitfall trap samples.

You may recall that when I first began work here at the University of Massachusetts I was sorting pitfall trap samples from the 2008 field season. This year’s traps were even greater in number since the students sampled two watersheds instead of one. Last year’s samples had already been placed in alcohol, and were about as “clean” as one could expect. My task over the past couple weeks was to render this year’s specimens workable.

Scientists using pitfall traps face several challenges. First, you need to be able to kill the trapped animals quickly, before they can maul each other. Second, you need a fluid that will not readily evaporate over the trapping period. The trapping interval in this case was one week. The solution, in a literal sense, was propylene glycol.

Propylene glycol is the major ingredient in antifreeze. One of the problems with it is that it is a sweet substance that is attractive to vertebrates like raccoons and other wildlife. While antifreeze was once dyed green, it is now often dyed pink so as to help discourage its consumption. Another problem with this compound is that it has a really corrosive effect on some invertebrates. Beetles trapped in the pitfalls often begin to disarticulate. Snails and slugs quite literally melt. You can only imagine the putrification factor. Actually, you can’t imagine that.

My supervisor is a graduate student who is simply amazing. She has a great deal of responsibility, but never asks anyone to do something she wouldn’t do. So, she cleaned the samples from one watershed, and I cleaned the samples from the other. Neither of us ever ended up passed out, or throwing up all over everything. Quite a feat, especially considering that ventilation in the lab leaves something to be desired, and the odd salamander or frog that was accidentally trapped only amplified the odor. The worst was a long-tailed (or “masked”) shrew, Sorex cinereus, that just about brought me to tears and seriously threatened to initiate my gag reflex.

Still, the slug slime was probably the most aggravating, not as much for the smell, but for the fact that it blocked the screen of the sieves we were using to filter the specimens from the antifreeze solution. Pouring out a sample with slugs meant you had debris everywhere, not concentrated in the center of the sieve where you wanted it.

The protocol was to check to make sure the label inside the container (urine specimen containers, how appropriate) matched the label on the outside. Then you wash the label over the sieve and set it aside. You pour the contents of the container into the sieve, and then rinse it gently with water from a squeeze bottle. Next, you invert the sieve, give it a sharp tap to dislodge as many specimens as possible into a bowl, and rinse the rest off with 70% ethanol (ethyl alcohol). Lastly, you pour the contents of the bowl back into the container (after rinsing the container). Did I mention that small quantities of detergent are also used to break the surface tension of the liquid agent in pitfalls? Some samples contained enough suds to do a load of laundry.

Ah, but that is all behind us now, and I can hardly wait to get a better look at the actual specimens. The pitfall traps were done a week later than last year’s traps, and the difference was quite dramatic. All the spiders in this year’s samples were much, much larger than those in last year’s! More beetles, too, it would seem. Now, if I can just get all my food to stop smelling like rancid snails….

More work!

When it rains, it pours. Here I am trying to get ready for my move to Massachusetts for a 28-week stint in the Department of Natural Resources Conservation at University of Massachusetts (Amherst), and another opportunity drops in my lap. I was flattered to be asked to review a manuscript and images for a regional field guide to insects that will cover the northern portions of Minnesota, Wisconsin, Michigan, and adjacent southern Canada.

I literally can't afford to turn down anything right now, so I am reading the text almost as I am writing this blog entry. I can guarantee that the finished work is going to be a quality product, not because I have some input, but because I am already a big fan of the other titles in the series.

Rest assured, when the book comes out, I will let you know about it. Meanwhile, I politely request patience with the decreased frequency of blog entries as I finish preparing for my move, and get acclimated to my new (if temporary) workplace and residence in Massachusetts. Thank you.

Women and Bugs

The majority of questions that I receive at AllExperts.com are, perhaps surprisingly, from women. Even more encouraging, the questions are usually intelligent and do not give the impression that the person is panic-stricken. Why do women ask the questions? I have a theory, and it doesn’t have much to do with men not wanting to stop and ask for directions.

Women in American society, at least, are also on the front lines of the household and the workplace. They are the first to notice insects and spiders trespassing in the home or office. Their protective motherly instincts kick in, and their first priority is to determine the identity of the intruder and understand whether it poses a health threat to their family, co-workers, pets, houseplants, pantry, or property. They want to know, ideally, if there is a way to confront the creature that avoids using insecticides or other toxins. A few are truly concerned about acting humanely toward the organism.

Oddly, the questions I get from men are frequently nostalgic. They are curious about insects and other arthropods they saw decades earlier. One gets the impression that (a) they have too much time on their hands and (b) they are thrilled that the Internet now gives them the opportunity to pose such questions to an expert that was previously less accessible.

The challenge now is to increase the opportunities for interaction between the scientific community and the general public, and improve the accuracy of information available on the Internet and through broadcast media. We need to fairly compensate science writers for providing just those services, but that is a topic for another day.