Ants!!!!!

We have been overrun by ants. I'm about to lose my mind!! They started in our bedroom. When Daddy Spice would leave clothes on the floor next to his side of the bed, we would find them covered in ants by the next morning. He treated the ant mounds outside, and then treated our room with diatomaceous earth (safe "earthy" way to treat). They finally left that area and moved to the laundry hamper. Our dirty clothes would be covered in ants, so again, we treated with diatomaceous earth. So this morning, before making Spicy Girl's bed, but a few hours after she had woken up, there were ants all over her bed. Had they been in there while she was in bed? I don't know. She didn't have any bites on her. Just freaked me out a little. I stripped her bed and washed everything, but after returning home from church tonight, there were ants on her mattress. So Spicy Girl got to go to bed in the guest room, a first for her. Now what? How do I treat her bed. The diatomaceous earth is safe, but I don't want it all over her mattress. If you don't know what diatomaceous earth is, it's little insect skeletons (looks like dust) that are sharp and cut the insects exoskeletons. The insects end up getting dehydrated and die. Again, I don't want insect skeleton all over Spicy Girl's bed. Well, I guess we're going to have to figure it out tomorrow. I'm heading to bed...I hope there are no ants in it!