My lasagna beds have never attracted an unusually large number of ants, but I never used a lot of food scraps.
Any food in a cold open pile might attract bugs or bigger critters. If you use enough fall leaves and other carbon to absorb the odor, it should control the possible smell and attracting rodents.
If you have no experience composting, learning a little about the basics would be helpful. A small hump also will not heat up, at least not much and not for long. Keep it moist throughout but not wet. Here's a good introduction
http://sarasota.ifas.ufl.edu/c...
Karen