Richland, WA WinCo does take printable coupons, I use them each week.
I am matching up current coupons in our area with WinCo's low prices as well as listing sale items.
Red Plum Printables
Smart Source Printables
Insert information: SS= Smart Source, RP = Red Plum, GM = General Mills
Coupon information: $2.00/1 = $2 off 1 item
Here is the link for you to print out: NW Coupon Lady WinCo Foods
Also see BeCentsable's Grocery Gathering and Grocery Deals for more savings on your other favorite stores