Yes, Sevin Concentrate can be used for ants.
Sevin Concentrate is labeled to be used outdoors only. For ants indoors, we would recommend using something like Phantom Aerosol. This can be sprayed around the baseboards, cracks and crevices, void treatment where pests harbor, nest, trail, run, and/or breed or hide. Treat into voids or to surfaces beneath cabinets, furniture, spaces between equipment, expansion joints, surfaces behind sinks, floor drains (to sewers), lockers, and water pipes.
When using Sevin Concentrate it can take a few weeks to get the results you needs as this is not a contact kill and need to work through the insect to fully eliminte them completely. Depending on the level of infestation you have we advise to reapply according to label for faster control.
Sevin Concentrate will not harm birds or other wildlife when applied as directed on the product label. It best applied when animals are not in the area until the application is dry.