Sativa Clean Product Mix & Match Buy 1, Get 1 Free FTO, or Free Trade Organics, has become a favorite brand at Top Cola. This is because the quality is on point, and the product is clean – regardless if its their shatter, batter, live resin sticks, joints, or now.. cartridges. Cat 3 oil is the only quality oil used in these. Cat 3 means no pesticides, or other contanimants you wouldn’t want. These things rip like a champ. Try one and get hooked on the incredibly potency and taste.