So I recently realized that my vivarium has some ants crawling around in there with my Box turtle, her name is Paqi. I changed the substrate thinking this would solve my problem, but then a few days later, I see that they have returned. I wanted to know if this was a serious issue. The ants are normal black ants, I think they might have been attracted to some of her strawberries. Some one please help me with this problem. I need to know if this is dangerous for her and if I have to change the substrate again. Thanks a lot all!