Drop cloths generally fall into three categories: Canvas, Plastic, and Butyl-backed (Non-slip). Canvas drop cloths (typically 8oz, 10oz, or 12oz) are the industry standard for professional painters because they are absorbent, reusable, and durable. Plastic (Polyethylene) films are best for one-time use or covering furniture to protect against dust, but they are slippery and do not absorb spills. Butyl-backed or rubberized cloths offer the best protection for hardwood floors and stairs as they provide a leak-proof barrier and prevent slipping.