In fact, Lowinger has all but given up spraying, because so much potentially dangerous material goes into the air. ???I look for paint systems that self-level,??? she says, ???so you can brush or roll them instead of spraying them.??? She has also stopped using aromatic hydrocarbons such as xylene and toluene. ???They are very good solvents for dissolving waxes and resins, but they are very toxic,