A method of forming a coated bag for pre-treating an item stored in the bag, the method comprising the steps of: providing a bag (10; 30) having a sidewall (13; 33) extending from a closed bottom end to an open top end and defining an interior surface of a cavity ; and expanding the bag (10; 30) from a flattened condition to an expanded condition; characterized by the further steps of: inserting at least one adhesive dispenser through the open top end of the bag into the cavity ; applying an adhesive from the at least one inserted adhesive dispenser to form an adhesive coating on the interior surface of the cavity , wherein the adhesive is a first adhesive and the adhesive coating is a first adhesive coating; inserting a particulate dispenser through the open top end of the bag (10; 30) into the cavity ; discharging a particulate from the inserted particulate dispenser to embed the particulate in the adhesive coating ; drying the adhesive coating to retain the embedded particulate on the interior surface of the sidewall ; and applying a second adhesive from the at least one inserted adhesive dispenser to form a second adhesive coating on the embedded particulate , such that the embedded particulate is captured between the first and second adhesive coatings . providing a bag (10; 30) having a sidewall (13; 33) extending from a closed bottom end to an open top end and defining an interior surface of a cavity ; and expanding the bag (10; 30) from a flattened condition to an expanded condition; characterized by the further steps of: inserting at least one adhesive dispenser through the open top end of the bag into the cavity ; applying an adhesive from the at least one inserted adhesive dispenser to form an adhesive coating on the interior surface of the cavity , wherein the adhesive is a first adhesive and the adhesive coating is a first adhesive coating; inserting a particulate dispenser through the open top end of the bag (10; 30) into the cavity ; discharging a particulate from the inserted particulate dispenser to embed the particulate in the adhesive coating ; drying the adhesive coating to retain the embedded particulate on the interior surface of the sidewall ; and applying a second adhesive from the at least one inserted adhesive dispenser to form a second adhesive coating on the embedded particulate , such that the embedded particulate is captured between the first and second adhesive coatings . inserting at least one adhesive dispenser through the open top end of the bag into the cavity ; applying an adhesive from the at least one inserted adhesive dispenser to form an adhesive coating on the interior surface of the cavity , wherein the adhesive is a first adhesive and the adhesive coating is a first adhesive coating; inserting a particulate dispenser through the open top end of the bag (10; 30) into the cavity ; discharging a particulate from the inserted particulate dispenser to embed the particulate in the adhesive coating ; drying the adhesive coating to retain the embedded particulate on the interior surface of the sidewall ; and applying a second adhesive from the at least one inserted adhesive dispenser to form a second adhesive coating on the embedded particulate , such that the embedded particulate is captured between the first and second adhesive coatings . <EOS>