Greenies Pet Treats: 2.5oz Dental Cat Treats (various flavors)
& More w/ S&S + Free S&H
Amazon has various Greenies Dog & Cat Treats on sale from $1.87 when you 'clip' the 20% off coupon and checkout via Subscribe & Save (click 'First Delivery On', then select 'Get it with your next Subscribe & Save delivery'). Shipping is free. Thanks TattyBear
Note, coupons are typically one use per account. You may cancel your Subscribe & Save subscription any time after your order ships.