Primatte Keyer can analyze your background and even out the lighting before performing the key - making for a much cleaner background removal.
Hybrid controls help fill transparency gaps in your foreground matte, making a cleaner key. Speck and Hole combat problem footage with wrinkles, discoloration or uneven lighting.
Smooth out matte edges with Deartifacting tools that remove blockiness from foreground edges caused by compression algorithms in the source footage.
Spill Sponge, Matte Sponge, Spill Minus/Plus and Spill Killer give many ways to remove spill color in difficult spill situations like semi-transparent areas, edge fringe and motion blur.
Recover details that may get lost in the keying and correction process with tools like Restore Detail and Decrease Opacity, especially on objects like hair, clothing and smoke.