Waterproofing Wax for Leather vs Rug & Carpet Protector 14 Oz.: which is safer?

Where these two actually differ

• We flag Respiratory irritation or fume inhalation during application and PFAS in water repellency treatment on the Nikwax and not on the Scotchgard.
• We flag Inhalation of spray aerosol during application, Volatile organic compound (VOC) off-gassing, Skin and eye irritation from direct contact and Accumulation of fluorochemical residues in household dust on the Scotchgard and not on the Nikwax.
• The Nikwax is wax-based waterproofing where the Scotchgard is Fluorochemical-based stain and water repellent coating, which is most of the difference in these two grades.
• The gap is 25 points, wide enough that this is not a close call, and the Nikwax is the one to buy.
• We are less certain about the Scotchgard grade, at 45% confidence against 78%, because it discloses less.