Biggest darn hornets........big problem!!

[Dink]

When I purchased my home last year the back yard had Cicada Killing Hornets in it........I poured paint in the holes, gas, diesel, you name it(nothing worked)...........They left around sept...........They are back this year in FULL FORCE!!! Hundreds and Hundreds of them!!! I've been back there w/ a batmitton racket everyday goin to town........The hardest swing I have will only stun it and put it to the ground........If I don't run over there and step on it, it flies away......usually right at me!! Web sites say they don't sting humans, but I've got dogs and kids running around...........Dogs are always trying to bite them in mid air, stupid dogs......................anyone here an exterminator??? I've found that if I wait till they go to their hole at sundown, I can pour gas on them, that kills em good! And quick........but after 2 gallons of gas and numerous bald spots in my yard(from the fire....oops) I haven't even made a dent............web-site says to pour 6inches of gravel where they live, but I'm not haulin all that in my backyard!! I like my grass................Anyone else have these things, or a solution?? I'll get a pic up of one to show how HUGE these things are.............Tim