
How to get rid of Millipedes
Millipede and centipede invasions have long been a problem for many homeowners.
Although these invasions seem more likely to occur in the spring and after heavy
rains, they have been reported in every month of the calendar year.
Thousands of migratory millipedes can create a mess. Once they die, expect a smell
that can last for several weeks. Centipedes have been known to do the same, but
usually in much smaller numbers. This article will try to provide some information
about these pests, why they are a problem and how you can treat for them.
There are over 1000 species of millipedes in the United States. They are slow
crawling, appear to have hundreds of legs and generally gray to light brown in color.
Most species take 1-2 years to reach reproductive maturity and can live 5-10 years.
They love to live in decomposing thatch, leaves and mulch. They will get nutrition
from these locations and may choose a root system of a nearby plant on which to
feed. When they breed, the eggs hatch larva which will feed right where they
emerge. This leads to large populations or nests which can number in the hundreds.
They will remain feeding as long as there is a food supply to support the nest. This
could be for a year or two but at some point expect a migration. Excessive rain,
drought or lack of food will cause them to migrate. This phenomenon can occur at
any time of the year and may result in several thousand moving in a direction that is
in line with your home. The author has dealt with several infestations of millipedes
that have numbered in the hundreds of thousands.
One customer had so many he used a gas powered blower to round up all the dead
ones and 14 Hefty bags to haul them away! This happened over a three day period,
but if he didn't have the right materials or know how to use them, he would have had
a mess in his home. Other infestations have lead to thousands stacking up or
climbing the side of a house.
The migrating millipedes will reach a certain height and simply stop. It is unsure
why they do this but it will lead to huge numbers accumulating and a nasty smell
when they die. Centipedes like to live in the same environment as millipedes. There
are two common species of centipede in the United States. The common house
centipede has long antennae and 15 pair of long legs. They are able to move rapidly
and will randomly stop and go when on the move. The other centipede is a larger
and longer specimen. Most common in the south, this centipede can grow to over 5
inches long. Like millipedes, centipedes are slow to develop.
They like moist areas to live including mulch, pinestraw, thatch, leaves and under
rocks or logs. The big difference is that centipedes like to eat other insects.
In fact, centipedes have a poisonous bite. Do not handle them. Like scorpions, their
sting will hurt like a wasp or bee sting. However, certain people may have extreme
allergic reaction to their venom so keeping your hands off them will prevent you
from finding out if you are overly sensitive.
Centipedes are one of the few predators which feed on spiders. They prefer to move
at night, but like millipedes will migrate under certain conditions. It is not uncommon
to have several of them migrate when water levels rise following a rain. Centipede
nests may harbor several hundred and when they migrate they seem to move in the
same direction. This will lead to infestations in the home if left untreated.
Controlling millipedes and centipedes can involve a series of steps. The first is
identifying nest sights. This will allow you to minimize the conditions these pests
need which will lead to less getting inside. Look to see where they are invading. In
most cases, you will find them along one side or wall of your home.
Look around this side of the property. Inspect nearby mulch, compost piles, wood
piles, large rocks, pinestraw, sheds, cracks in cement walkways or driveways and
stoops. Any of these locations can breed, feed and shelter these pests.
If you know where they are coming from, you will be able to treat the area
precisely and even remove excessive organic matter available for them.
Clean up leaves. Replace old straw that is decomposed. Move log piles away from
the home. Seal cracks in cement which allow water to gather. Rake thatch buildup
from your lawn. By reducing these conditions, you take away food and harborage
these pests need for survival.
Lastly, if you have a lot of access points through the siding of the home, you should
consider a "seal" job. Most homes that get invaded have lots and lots of small
cracks, crevices and gaps through which millipedes enter.
These entry points should be reduced and/or eliminated with the use of some FOAM
SEALENT. These cans are self charged and good for small jobs. If you have a lot of
work to do, it would be wise to invest in one of the professional FOAM GUNS and
maybe even the 24" FOAM GUN. These tools will enable you to apply the sealent
quickly and precisely without much waste or missed applications. In other words,
they will more then pay for themselves. You'll need the FOAM CANNISTERS for these
guns, which easily fit on either applicator, and cover a much larger area then the
smaller cans. If your home is prone to animal invasions, consider the FOAM WITH
REPELLENT. This cannister comes with expanding foam but includes a strong
repellent which insects and animals do not like. It may be just what you need to
make sure ladybugs and other undesirable home invaders aren't able to find their
way inside quite as easily as they have in the past. Be sure to keep your guns clean
by using some FOAM GUN CLEANER. This will help keep the gun functioning and
ready to go to work when next needed. Once you have done step one, you can treat
the problem.
Step two is deciding which method of control you need to employ to stop the
invasion. Millipedes and centipedes are not insects. Although many insecticides have
millipedes and centipedes on their labels, most don't work well for controlling a
migration.
If you want to stop them quickly and keep them from getting into your home, use a
product called Demand CS. Although this pesticide has been available for some time,
it hasn't lost any of it's ability to work great on either millipedes or centipedes. It
works well because the liquid form is a micro encapsulate.
This means it is essentially a bunch of small capsules which will open over time.
Because they too big to sink into porous surfaces they are able to provide much
longer protection than normal liquid concentrates. The same is true with the wettable
powder form of Cyfluthrin. It won't sink into porous surfaces so it is able to provide
much longer protection where millipedes or centipedes are active. Although you can
use it inside, treating outside will keep them from coming in. Spray around the home
using one of the SPRAYERS we offer. Be sure to treat on the foundation spraying a
deliberate swath at least three feet up from the ground. Go as high as you have
them crawling on the home to kill what is there and stop new ones from re infesting.
It is most common that one or two sides of the house will have the most activity. Be
sure to concentrate your efforts where the activity is. Since both pests like to live
adjacent to the foundation, it is recommended that you treat the ground around the
home as well. Pay attention to the plants, shrubs and root systems of plants. Spray
around the trunks and the ground of any plant you think may have a nest. Watering
after you spray will help the product to sink down and work it's way deep to where
nests may be feeding.
If you simply have too much mulch or turf area to treat with liquid, use BIFEN
GRANULES. This product is a granule material which works by killing as well as
repelling these pests. Broadcast the granules into mulch or turf that you think is
infested. The GRANULE SPREADER applicator is easy to use and will let you get even
and uniform coverage when making the application. The granules are weather
resistant and will last longer than the spray. The granules won't work as quickly as
the spray, but they will enable you to treat large areas economically and effectively.
If you have a lot of activity in the home, you may use the Demand CS inside. If you
believe the nests may are behind walls or in hard to treat cracks, BAYGON AEROSOL
is designed to let you treat these areas. It uses Baygon as the active ingredient and
with it's special tube injector, you will be able to get into tight cracks and joints these
pests like to hide. Centipedes are most likely to nest in the home and will thrive in
moist basements or crawl spaces. From these areas they will move into wall voids.
Use the Baygon aerosol for neat and penetrating applications.
Having a BUG VACUUM around can help; it works very well for Centipedes but not so
good on millipedes. It will allow you to quickly remove centipedes without getting
stung. Step three is the ongoing maintenance of watching and making sure to
minimize nest locations. By stopping the nests from being able to develop, you are
stopping the invasions which would undoubtedly follow. In most cases, homes which
experience migrations are more likely to have it happen again. In fact, most people
believe the migration to be a "freakish" occurrence that doesn't need to be attended
to. The fact of the matter is that millipedes and centipedes take a long time to
develop. This period of development may be several years before enough have
matured to migrate. Once they begin to move and relocate or die, the cycle is forced
to start again. Don't expect to see any for a year or more. However, next time could
be a lot worse if left untreated. Millipedes and centipedes are not insects but are
considered pests. They like to live in the same area but do not eat the same food. If
left untreated, populations can build up and lead to mass migrations. These
migrations can infest your home with messy, smelly dead bodies that seem to get
everywhere. To stop them from coming inside, treat with Demand CS. If you have
large turf or mulch areas where you think they may be living, treat with Bifen
Granules for better coverage. If you have them in the walls, Baygon Aerosol is easy
to use and will reach deep into the voids they like to live.