The business name is simply that, a name, a way to identify a business, entity, or individual. Due to the potential value of a trademark and the inherent property rights entailed within a trademark, the application for a trademark is much more complicated.
These are two separate questions. Organisms do not serve evolutionary purposes. Traits within organisms affect their survival, which might be thought of as evolutionary purpose. Even that is still not quite right. This question might better ask for ecological purpose. Ants have many such purposes. They clean up dead organisms as scavengers.
The problem is, ants have strengthened their immune systems against chemicals which have been used to eradicate them, in subsequent seasons, they continue to annoy home owners. Therefore, most of the ways which are used for home remedies against ants are basically meant to ward them off, rather than kill them. During warm weather or rainy seasons, ants can be found all over the house, especially in the kitchen, dining and garden area.