Containers with any quantity in them should come to a household hazardous waste collection day held in the Alliance. Click here for upcoming dates.
Your local hardware store may take them as well.
Both latex and acrylic paint are safe to go in the trash as long as the contents are completely dried up. If there is a little bit in the can, take the lid off and let it air dry (keep away from children and pets). If there is a lot in the can you can add saw dust or crumpled up newspaper and once that is dry, it can go in the trash.
Metal cans can be recycled in the scrap metal container in at the Transfer Stations.