With hot water, around 125 degrees? Ive had a nest that Ive been procrastinating on dealing with but we’re having a yard party in a couple weeks and they need to go. Trouble is, the entry hole goes horizontal after a few inches in. No way to successfully dump gas. So I dumped close to 30-40 gallons of hot water. Never saw a single one exit the nest but I could hear some pissed off yellow jackets buzzing underground. Total run time was 15 mins roughly. Nest filled up with water after about 10 mins. Im thinking I won this battle... got another nest in the front yard I need to douse if this is successful.
that was 4 years ago. Had never had a reaction to a sting in 47 years.
