http://www.3m.com/us/home_leisure/scotchbrite/Premium_MBG.pdf
From the rebate form: No expiration found
"If you purchase Scotch-BriteTM Stainless Steel OR Cook Top Cleaner Starter Kit and are not convinced it’s the best you’ll ever use, we will refund your money back for one Stainless Steel OR Cook Top Cleaner Starter Kit product (up to maximum offer of $7.99)."
From the rebate form: No expiration found
"If you purchase Scotch-BriteTM Stainless Steel OR Cook Top Cleaner Starter Kit and are not convinced it’s the best you’ll ever use, we will refund your money back for one Stainless Steel OR Cook Top Cleaner Starter Kit product (up to maximum offer of $7.99)."