Amazon has the 32-Oz Simple Solution Outdoor Mulitsurface Pet Odor Eliminator for Lawn and Yard w/ Hose Spray Attachment on sale for $10.52 when you checkout via subscribe & save. Shipping is free.
Note: you can cancel sunscribe & save anytime after your order ships.
Also available:
Walmart has the 32-Oz Simple Solution Outdoor Mulitsurface Pet Odor Eliminator for Lawn and Yard w/ Hose Spray Attachment on sale for $11.07 + Free Store Pickup. Alternatively, shipping is free on orders $35+.