Thanks to my mom for the heads up on this rebate offer!
At Dollar General you can find Mean Green products with hangtags on them for mail-in rebates. If you buy one 32 or 40-oz product and send in the rebate form you will receive a coupon for a free product. Must be postmarked by 4/30/12. These are commercial cleaners that can be used on tons of surfaces inside and outside - including blood stains which is kind of creepy. But seriously, the list of places it can be used is huge (grills, vinyl siding, tires, golf clubs etc.) so this is probably a great product to have around the house!