27 CFR §6.96

1. (a)Coupons. The act by an industry member of furnishing to consumers coupons which are redeemable at a retail establishment does not constitute a means to induce within the meaning of section 105(b)(3) of the Act, provided the following conditions are met:
   1. (1)All retailers within the market where the coupon offer is made may redeem such coupons; and
   2. (2)An industry member may not reimburse a retailer for more than the face value of all coupons redeemed, plus a usual and customary handling fee for the redemption of coupons.
2. (b)Direct offerings. Contest prizes, premium offers, refunds, and like items may be offered by industry members directly to consumers. Officers, employees and representatives of wholesalers or retailers are excluded from participation.