PLEASE DON'T USE GASOLINE AND A MATCH! IT IS EXTREMELY DANGEROUS!
You can use about a half pint of gasoline to pour in the hole, but no matches! I killed a large nest of them close to our front door several years ago. I finally found the entrance, waited until it was really dark, and used a piece of PVC pipe about 3 feet long with one end at the entrance to pour the gas through. It killed them all.
Have a blessed day,
Leon