Dawn "Dish" Liquid, the Lie

i typically use about half a cup in a gallon bucket, fill up half way ( i figure the more dawn in water mix, the better ) or just a bit more.

When filling, use hose on half or you will end up with 3/4 suds and 1/4 mix lol. you want more mix than suds ( but suds work also )

Since i have a slight sadistic attitude toward fire ants, i usually stir up the mound and poke several deep holes, wait for them to swarm.

Pour.

Lawn chair to view the carnage.

I usually do two buckets like that. Sometimes ill even come behind the pour with hose/jet nozzle and suds up the ground as much as i can.

Oh and it does not harm your lawn either.
You can also mix Dawn, Table Salt and Vinegar to make one hell of a non-toxic weed killer. I spray the cobblestones at my house with that mix and it works like a charm.

I typically use 1 Gallon of Vinegar, Half Cup of Salt, and half a bottle of Dawn and just mix them in a weed sprayer. Add more salt as needed if the weeds come back quicker that usual. An application should last you about 3-4 months depending on the amount of rain received.