Bbq Silicone Mat for Weber, Scratch Resistant Design with Organized Slots for Tools and Seasonings, Heat Resistant (black), Multicolor vs Floor Protection Mat 7696: which is safer?

Where these two actually differ

• We flag Silicone additive/filler contamination (unspecified), Thermal degradation at extreme temperatures, Microplastic shedding if mat degrades and Coating degradation or peeling on the Weber and not on the Weber.
• We flag Thermal degradation and off-gassing, Filler and processing aid leachates (rubber formulations) and Mold and bacterial growth if poorly maintained on the Weber and not on the Weber.
• The Weber is silicone (no nonstick fluoropolymer coating disclosed) where the Weber is Silicone or rubber floor mat, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.