Buy both a Seventh Generation Liquid Laundry & a Hand Dish Detergent and get a voucher by mail for a FREE Spray Cleaner. Go here (pdf) to get the rebate form.
Valid for products purchased between 10/28/10 and 11/3/10. See rules for details. Available at Walmart, Target, Whole Foods Market, and other fine retailers.
Also, be sure to check out your local Sunday paper for coupons -- $1 off any Seventh Generation product and $1 off any 100oz Liquid Laundry Detergent.