Waterproofing Wax for Leather vs Footwear Repel Plus: 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 Granger's.
• We flag PFAS in water repellent coating, Volatile organic compounds (VOCs) / inhalation during application, Coating degradation and re-application frequency and Skin or eye contact during application on the Granger's and not on the Nikwax.
• The Nikwax is wax-based waterproofing where the Granger's is Waterproof treatment on footwear, 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 Granger's grade, at 35% confidence against 78%, because it discloses less.