What is the solar term or how many months will mosquitoes disappear in Shandong?

10/day, I am very afraid of mosquitoes. I don't use mosquitoes early and late every year. Mosquitoes generally appear in May and then disappear in1October. But I'll tell you a way. Buy a bottle of 100 tablets of vitamin B 1 2 yuan at the drugstore, and use three or four tablets of water each time. It's super useful when mosquitoes don't bite. I just learned it this year. I consulted. By the way, if it smells, you can add a little toilet water. It also has the effect of relieving itching!