I can say for sure after couple rainstorms and it is still there. I have 2x 100lb. Dogs and only scoop each weekend. Not sure on your geographic area but I am in SE Michigan on an island.....so yeah we get a lotta bugs. It's good stuff. If you are having a backyard party spray a day before.
You gots to chase RiTchie @mealhead I mean @Metalhead around with a fork if you want to be successful
A net for where you are sleeping and 100% deet repellent sprayed on your clothes and hat when in a place with lots
I don't know how big your yard is, but if you have any Ryobi tools they have a battery powered fogger at HD for $100. I noticed it in a news article where they were fogging a train with disinfectant and had to look it up. My HD was sold out, I guess because of covid Sent from my LM-V450 using Tapatalk
made one of these last year, hoping it works this year: https://www.digitaltrends.com/cool-tech/weekend-workshop-mosquito-trap/