You can just use the turpenoid to clean your brushes. You can get a jar with a lid, clean the brushes then close it. As for using it on the canvas, I do use it occasionally to thin paint or to remove paint, just keep the window open, keep the painting in a different room from where people sleep for the first week of drying. Toss brushes in a sink after cleaning them; wash the turponoid off with water. Turponoid solvent is less toxic than regular turpentine or other agents. You'll be fine.