We are only able to honor one voucher at a time per household.
Vouchers can be used once and are no longer valid after being applied to your account. but keep in mind that vouchers that apply discounts over multiple orders only need to be added once to the initial order where you'd like the discount, and our system will take care of the rest automatically.
If you apply a second voucher to an order that already has a voucher applied, the first discount will be overwritten. So, if you happen to stumble upon two vouchers, choose wisely!