Since batteries can contain heavy metals and toxic chemicals, battery disposal is also regulated by law in some states. New York, for instance, prohibits consumers from disposing of rechargeable batteries in the solid waste stream, and also requires manufacturers to finance collection and recycling programs. Again, many communities have drop-off locations for these items, so check with your local municipality. Specific kinds of batteries, such as car batteries, can often be returned to their retailer. And, if all else fails, some organizations, such as Battery Solutions, take back batteries by mail as well.