The oleo-makers are the main pillar of UCO's National Collection System, which aims to collect and recycle used cooking oil nationwide. As part of the campaign, Olejomat issues an empty bottle to a user who pre-registers on a special free app, for UCO collection. With the help of the app, the user returns the full bottle to Olejomat, and points are credited to his or her account, which can be exchanged for eco-friendly rewards.