We live in Eastern Ontario, we have had exterminators out 2 times and tried many things ourselves, we CANNOT get rid of theses things. They seem to multiply daily, HELP!!!!!
Commonly black, gold, orange or multi colored, this pest is commonly known as a Digger Wasp. They’ll prey upon local insects and after paralyzing them, the subdued prey is brought back to the nest which is commonly found in grass, mulch or other turf areas around the home. Once in the nest, the prey insect will become food for the digger wasps young. The young will hatch from eggs which are laid on the prey insect deep inside the ground secured nest. Nests will contain 3-6 eggs and female digger wasps will farm several nests at one time.
If left to do as they please, digger wasp infestations will rapidly increase in size. Since they typically focus on similar areas as where they themselves were bred, 1-2 nests can become 5-10 and then 50-100 if left untreated for a few years. Additionally, adults will overwinter (hibernate) in the nest and the following year they’ll pick right up where they left off when retiring the previous fall.
Controlling digger wasps involves saturating the turf where nests are concentrated. Instead of trying to treat each of their nests directly, it’s best to use a “shotgun” approach and simply saturate the area. At the rate of 1 gallon per 100 sq/ft, CYPERMETHRIN will usually do the job. Use a regular PUMP SPRAYER or even a HOSE END SPRAYER to apply the material and be thorough. Active adults will die out the following week as they trek through the treated foilage but it can take 1-2 months for all of the nest inhabitants to die. This is because each nest can have developing pupae which is a stage of wasp the treatment will not kill. To insure all stages are controlled, it’s important to treat at least every 2 weeks for at least 2 months. So to expect long term control, you should expect to expect to make at least 4 applications and even more if warranted.
For organic gardeners, the BUG PATROL RTS spray is certified organic and though it works on a wide range of pests, it will require more frequent application to get the job done because it really doesn’t have much of a residual. Expect to use it weekly for two months and after that, periodically to insure the problem doesn’t return.
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