Indian Meal Moths
are probably the most common pantry pest found in kitchens and pantries.
Adults of Indian meal moths have a wingspan of about
3/4" when at rest, the wings are folded together-held tightly together
by the body .
The wing is a blend of two colors: front half of the wings-pale grey-pale
tan, bottom half of the wings: a rust-bronze color
Larvae size: is 1/2", a dirty white-off white color, it can have green
or pink hues.
They are nocturnal, flying a night...if disturbed during the flying,
they will zig zag. They rest during the day in dark places.
They lay their eggs in food stuffs like: grains, grain products, dried
food, dried fruit, powder milk, seeds, candy, chocolates, and specially
dry pet foods.
Indian meal moths can take from 25-135 days for moths
egg-egg development cycle to occur.
One moth can lay 100-400 eggs over 1-18 day period. Almost any thing
in your pantry that is not in a "tin can" is suspect.
The larvae is what does the damage-feeding on these different food items,
forming an extensive web type of substance over the food items that they
infest.
Abundant webbing in infested materials is characteristic Of infestations
by the Indian meal moth. Its larvae are often found far from infested
foods because they usually crawl away from their foods to construct silken
cocoons in which to pupate. The Clothes moth is a little different in
that they have no distinctive markings, and the wing span is only 1/4th".
RECOMMENDED
PRODUCTS: INDIAN MEAL PANTRY MOTHS
Pheromone
traps for the adult moths and residual insecticidal sprays.
Each trap comes with a pheromone packet, and a sticky interior area
to trap the adults.
After the traps fill up with adult moths, replace the traps if necessary.
In private residences the pantry pest such as the Indian meal moth
is usually brought in products from the grocery stores. It is usually
just in one area, but can spill over into other areas.
Prevention and Sanitation:
Place
exposed food in containers with tight-fitting lids .
Periodic
cleaning of the shelves helps to prevent infestation of stored food
products by pantry pests.
Certain pantry pests need only small amounts of food to live and breed.
Some
infestations of packaged food originate in the food-processing plant
or warehouse.
Broken packages should not be purchased, or should be exchanged for
unbroken packages when discovered, for the chance of these being infested
is greater than for perfectly sealed ones.
Do
not mix old and new lots of foodstuffs.
If the old material is infested, the pest will quickly invade the new.
If you
are unsure about an item being infested, place it in a plastic bag where
you will be able to catch anything that emerges.
If you find the pantry pest accumulating in the bag, you know the foodstuff
is contaminated and needs to be discarded.
To insure any item is pest free, store it in these clear bags for at
least a month. Sometimes it takes even longer for the adults to emerge.
Infestations
are most likely to occur in packages that have been opened for the removal
of a portion of the contents and then left unsealed for long periods.
Some of the pests may find their way into other food packages, but even
those in a single package may become so numerous that large numbers
may find their way into every suitable material in the home, and will
eventually crawl over floors, climb up walls, and gather about windows.
Clean
old containers before filling them with fresh food. They may be contaminated
and cause a new infestation.
Make sure
that cabinets and storage units are tight and can be cleaned easily.
Store
bulk materials, such as pet foods, in containers with tight-fitting
lids.
Keep
storage units dry. This is important because moisture favors the development
of pantry pests; dryness discourages them.
Some
pantry insects breed in the nests of rodents and insects and may migrate
from these into homes. Eliminate any nests found in or near the home.
Pantry
pests can also breed in rodent baits. Be sure to frequently check and
discard infested baits.
Controlling Temperature:
When packages
of food are found to be infested with moths or beetles, either low or
high temperatures may be used to control the infestation. Insects are
cold-blooded; their body temperatures closely follow that of their environment.
The most
favorable temperature for most pantry pest is about 80°F. Above 95°F
or below 60°F, reproduction and survival is greatly reduced.
When temperatures
are lowered, insect activity decreases until all activity stops. The
quicker the drop in temperature, the quicker the kill.
Although
insects will be killed, their bodies will remain in the food unless
sieved out.
An exposure
of 2 to 3 days to temperatures of 5°F or lower kills the more susceptible
stages (larvae and adults), but eggs require longer to kill (3 weeks).
An alternative
is to freeze the food for a week, remove it from the freezer for a few
days, and then refreeze it for another week.
IF YOUR CONCERN IS FOR PEST MANAGEMENT IN A COMMERCIAL BUSINESS,PLEASE
CALL FOR ADDITIONAL INFORMATION.-1-800-476-3368