This summer my back yard has suddenly gotten a large population of tiny dark red/ almost black ants that have made little hills all over my yard. Yesterday they left my dog covered in bites and she has bumps all over her. She's doing better now, she has very sensitive skin though so it probably looked worse than it really was. However this got me concerned about Lucy, my russian so I went out and looked closely around her pen and sure enough I found a little hill with ants everywhere so I've brought her inside which is sad because we've had a lot of severely wet weather this summer so she hasn't been able to really stay outside much this summer and now I want to figure out how to get rid of these ants so she can go back outside. Any tortoise (and by default, dog safe) tricks for exterminating ants outside?