Someone recently came into the Cottonwood Extension office with a tiny insect, asking what it is. Fortunately, it had a distinctive long snout. So that meant it was a weevil and I was able to narrow it down considerably and identify it as a rice weevil. I did get verification from J.P. Michaud, entomologist at the Ag Research Center in Hays, too.
It just so happened that was the same day my newspaper article is due. Therefore, I thought I would write about pantry or stored product pests. Some of the more common pantry or kitchen insect pests are probably the Indian meal moth, sawtoothed grain beetles, and flour beetles.
Several insects, commonly referred to as pantry or kitchen pests, infest dry or stored food products in the home. Most are either beetles or moths. In the case of beetles, both the adult and larval stages may be damaging while only the larvae of moths are destructive. Infestations may be noted when these insects are found in some products, but more commonly when the adults are seen crawling or flying about the kitchen or pantry.
Since most of these insects are of tropical or semi-tropical origin, they live and breed best under warm, humid conditions – conditions often found in kitchen cupboards. Since most do not hibernate, reproduction is continuous throughout the year and populations can build up rapidly if they are left undisturbed.
Inspection - always keep in mind that many pantry pests are strong fliers and that their larvae can crawl some distance from a source of infestation. The source of infestation is usually limited to a small area such as the kitchen, or a single cabinet, or a single susceptible product. Before you attempt control, find out this source and eliminate it.
This is not always an easy job. Check all the materials mentioned as susceptible products. Do not overlook the fact that a sealed container may be infested because the lid may be loose enough to allow pantry pests.
Sterilization - it is possible to kill pantry pests by putting lightly infested packages in the refrigerator freezer compartment for a least two or three days.
Sanitation - periodically clean all shelves in storage areas. Many pantry pests can breed in food particles that spill or sift from packages and accumulate in cracks and corners. The insects can then infest food packages on the shelves later.
Buy only small quantities of foods susceptible to infestation, especially in the summer. Carefully examine these foods when you get them to be sure they are free of pests.
Whenever possible, dry foods can be stored in clean glass or metal containers with tight fitting lids. (Empty coffee cans with plastic lids make excellent storage containers.) Clean containers thoroughly before placing fresh food in them. Never leave them undisturbed for long periods of time. Storing these food products in the refrigerator or freezer will prevent infestation.
Insecticides are not recommended for use against pantry pests.
This article is not intended to provoke panic, but just an FYI for folks to be aware of and keep in mind. If you have any questions give us a call at the Cottonwood Extension Office.
Stacy Campbell is an Agriculture and Natural Resources agent for Cottonwood Extension District. Email him at scampbel@ksu.edu or call the Hays office, 785-628-9430.
