70415 Boot Protector vs Fabric & Leather Duo-Pack: which is safer?

Where these two actually differ

• We flag Inhalation exposure to fluorochemical propellant and active ingredient, Skin contact with liquid concentrate (if can ruptures or leaks), VOC and solvent off-gassing after application and Degradation of shoe materials over time with repeated application on the Kiwi and not on the Nikwax.
• We flag Volatile organic compounds (VOCs) in spray carrier, Skin or eye irritation from direct contact and Residue buildup on treated materials over time on the Nikwax and not on the Kiwi.
• The Kiwi is Aerosol spray coating (unspecified fluorochemical composition) where the Nikwax is Fabric and leather waterproofing treatment (wax-based), 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 Kiwi grade, at 35% confidence against 62%, because it discloses less.