Once in a while there have been posts about controling ants in the ferret food and cages. Now it was my turn to get them. What I used was, I think, safe, and they were all gone by the next morning. First, I swept up all the crumbs and ants. Then I sprinkled Amdro, a fire ant bait, OUTSIDE the door where they were coming in. This stuff looks like sawdust and has no odor to us but the ants preferred that over the indoor food and went for it. They take the bait back to the nest. Then I sprayed the perimeter with natural insect control by Green Light, Biorganic insect spray. I bought it at Lowe's. The plant oils disrupt the neurotransmitters of insects without harming mammals. I have not seen another ant inside but there are plenty outside where they are welcome to aerate the desert soils. Carol O., Tucson [Posted in FML issue 4538]