If you don’t already have them, yellow jackets may soon lurk over your shoulder. Interesting fact: the German yellow jacket, which is the dominant species in the state, first arrived in Ohio in 1975. My typical recommendation for control and treatment of yellowjackets is to use an insecticidal dust for ground nests. Nests in wall voids may be treated with an aerosol spray with a plastic wand extension on the can. As always, read the labels on any insecticidal product to ensure you are getting the best use for your money. It is possible you will need to make an application more than once and be patient and persistent. The best time to apply is early morning at the crack of dawn when temperatures are cool and before yellowjackets have departed the nest.
More details on yellowjackets are available on Ohioline: https://ohioline.osu.edu/factsheet/HYG-2075-11