if you can't do the motor oil trick, there is a product from Nisus, called terro-pco, I think you may be able to get it from a do it your self pest control distributor, or contact nisus directly, I spoke with their entomologist already about this product, & they said it wouldn't harm the bees. The product comes in small rectangular placements, and you snip off one end, you can then place these wherever you need to. I have had very good success with sugar feeding ants with this product. For the fireants I use a product called talstar pl. It's in a sand base and is applied with a hand held broadcast spreader (you get from walmart or home depot for under 12.00) to all the lawn areas. It's generally good for three months with one application. Good luck!