Back To School 2018 CouponOffer valid now through Friday September 7th until 7pm. Offer only valid on Rapid Response brand products. Offer good while supplies last. Cannot be combined with any other offers. Orders must be paid in full at the time of purchase, whether done in-store or placed over the phone to obtain promotional offer. Not valid on previous purchases or exchanges. Must present printed offer or show on mobile device to redeem. No cash back or cash value. Offer valid one time per customer. Certain exclusions may apply.