Hurry to print off tons of new General Mills cereal coupons! This week at Walgreens, General Mills cereals are on sale for $2.50. Stack a new printable coupon with a Walgreens coupon for $1.00 off two from the May Savings Book, which can be found near the front of the store by the weekly ads. Although the manufacturer coupons do state, “No other coupon may be used with this coupon,” they can still be stacked with the Walgreens coupon. That only means that another manufacturer coupon cannot be used on the same single item.