Please don't dump it on the ground, pour it down a drain or put it in the garbage so that it goes to a landfill. It's unbelievalbe what many people do when recycling is so beneficial and relatively easy. Auto stores, quick lube stores, auto repair shops, even some marinas will accept or have a place to put used oil. Sears Automotive Centers probably have one if you guys have Sears stores. Don't mix it with other fluids (brake, power steering, etc.) and you should be all right. Thanks for being concerned.
Steve