Here is a link to their coupon policy.
Here it is in text…
Coupon Acceptance Policy
Effective as of September 30, 2010
We will gladly accept valid manufacturer coupons and Blain’s Farm and Fleet issued coupons.
All coupons must be presented at the time of the sale.
Customer is responsible for all sales tax at the full retail amount.
We will accept only one manufacturer coupon per item purchased.
All coupons must be presented within the valid date range specified on the coupon. Expired coupons and coupons without an expiration are not accepted.
Blains Farm and Fleet will accept printable coupons with the following restrictions:
“Free product” printable coupons will not be accepted. It is currently an industry practice not to produce printable coupons for free product. Buy-one-get-one-free coupons and other values that have a purchase requirement are acceptable.
Duplicate print at home coupons will not be accepted. One coupon per transaction.
Printable coupons may be rejected if they appear out of proportion, blurry, are obvious duplicates, or appear to have been altered in any way.
Blains Farm and Fleet will not accept printable coupons for more than 75% of a product’s value.
Blains Farm and Fleet will only accept printable coupons that have a valid scannable barcode.
The purchase must meet any and all terms or requirements set forth by the manufacturer.
The items presented for purchase must exactly match the item featured on the coupon; we do not accept coupons for items that we do carry.
We only accept coupons for equal or lesser value of the qualifying item, no cash back will be given.
We do not accept coupons from other retailers for money off the total transaction or money off specific items.
(Interesting stipulations on internet printed coupons, ie the no duplicates and the only for 75% of the purchase price of the item. Also the non-acceptance of no expiration date coupons sounds strange too.)