Please try our product for 60 days (2 boxes) and if for any reason you are not 100% satisfied, simply return the two empty boxes within 67 days from the time of delivery for a full refund excluding shipping charges. If you wish to take advantage of the price discount by ordering multiple boxes don’t worry. Any unopened boxes returned along with your first two opened boxes within the 67 day guarantee period will also be eligible for a full refund. How can we make this incredible guarantee? Because we KNOW you will be satisfied with our product. Please do not ship any product back after the 67-day refund period has expired. Returns must be received back at warehouse within 67 days of delivery with no exceptions. Please feel free to try our products, but refunds are limited to one order per customer.