We don't use Dawn on our plants. We do use it in combo with vinegar or ammonia on fire ant hills. Hubs said the other day I overkill but I stepped on a small ant hill as I was unloading groceries the other day and immediately got nailed. Had to drop everything, literally. Brushed them off and got into the car and turned it around. Yes the bites felt on fire. Ran into the house and immediately grabbed the alcohol to stop the stinging. When I finished I grabbed the Dawn and some ammonia. Sprayed the perimeter and worked my way in. It's been 2 weeks and I still have the bite festers to show for it. at least they don't itch. Thankful i'm not allergic to them.