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Hornets don't normally nest in the ground. Yellow Jackets nest in the ground. You can kill them by pouring gasoline in the hole and running.
Permethrin does kill yellow jackets as well as hornets, ground bees, wasps, and other stinging insects. You can discourage yellow jackets from nesting in trees and shrubbery around your yard by spraying them with permethrin as well.
Chrysanthemum oil will help to get rid of bees and yellow jackets. This oil will burn the insect when sprayed directly on them and kill eggs.
only bumble bees but not wasps or yellow jackets or hornets
Yes... I just killed something with boric acid.
Vinegar alone will not kill yellow jackets but if you mix it with other ingredients it will kill them. You will need to mix vinegar with water and liquid dish soap.
Yes pouring boiling hot water does kill rats. However, it is considered animal cruelty as it will put them through gratuitous, unnecessary suffering.
Don't try to do this yourself. Contact a qualified exterminator. Your local government or Yellow Pages should be able to direct you to one or more.
It may be Delta Dust that you are seeing that is used to aid in controlling yellow jackets that build their nest in the ground.
Spray with Dawn dish detergent it will kill ants, you can also use dawn to kill fleas. You can kill ants in an ant hill by pouring boiling water over it (but it will also kill any vegetation around it also)
By pouring lemonade directly on top of it.
Insecticides and traps are ways to kill yellow jackets. The insects in question can be controlled best in the early summer weeks by setting up mechanical, non-toxic traps and using aerosols or dusts after sunset and before sunrise, during which times yellow jackets are resting underground. Treatment is most effective during sub-50°F/10°C temperatures -- when the perceived pests cannot fly -- through professional services, with head-to-toe personal protective equipment.