Ground wasps built a nest by my tomato and basil garden! I was stung multiple times. I didn't want to use pesticides, and read lemon extract (lots) kills the nest. Didn't work. Then made boiling soapy water and poured that down the nest, filled it in, covered with a rock. Put many lemon peels around the garden; an apparent deterrent. They didn't return this year!
Ground wasps built a nest by my tomato and basil garden! I was stung multiple times. I didn't want to use pesticides, and read lemon extract (lots) kills the nest. Didn't work. Then made boiling soapy water and poured that down the nest, filled it in, covered with a rock. Put many lemon peels around the garden; an apparent deterrent. They didn't return this year!