The yellow flies are becoming less frequent, although they are still here. On my porch, I keep a bottle of alcohol and a bottle of windex. As soon as you're bit, apply alcohol liberally and then spray with windex. Yes, you'll still have a bite, but it won't itch as often. I think the key is to dry it out immediately. I don't have near the itching later on if I do this. Sometimes I even 'scratch in' the alcohol if it starts to itch right away. Also, if I know there is one around, I move around, wave my swatter and they will flock to you whereby you can beat the **** out of them before they get you. AND MAKE SURE THEY'RE DEAD! i've seen them get up and fly off after i've hit them!! Yes, I torture them, pull a wing off and feed the lizards on the porch. BE on the OFFENSIVE! To hell with yellow flies!