Some packages have a peelie on it that say, TRY ME FREE! Purchase a package of Hillshire Farm Deli Select Ultra Thin Hickory Smoked Chicken lunch meat, submit the UPC, original receipt and address info on a 3×5 card and receive a FULL rebate, up to $4.99! (Limit one refund per address.) 
Send to:
Hillshire Farm Try Me Free Offer
PO Box 6154 Dept. A
Douglas, AZ 85655-6154
Must be purchased by 6/30/09 and postmarked by 7/31/09. Limit one per household. Max rebate amount $4.99.
Thanks UtahDealDiva for this Thrifty tip