Use the code CUTLERY3 to receive 50 percent off your first three Tri-Tower cutlery refills with the purchase of the Dixie Ultra SmartStock Tri-Tower Dispenser. Customer must have Dixie Ultra SmartStock Tri-Tower Cutlery Station and 3 refills added to cart to receive promo offer. Discount applied in cart.. Sustainable, sleek and efficient, Dixie Ultra SmartStock Series-T Compostable[2] Disposable Plastic Knife Refills are ideal for Dixie Ultra SmartStock Tri-Tower Dispenser, helping you meet your sustainability goals with quality cutlery thats also compostable. The cutlery performance is similar to polystyrene, and the natural beige color complements the sustainability message. Each piece is labeled Compostable[2], which helps promote sustainability among end users and encourages appropriate disposal.