Reading, of all things, Amazon reviews for T50 stainless steel staples and the bifurcation of reviews between “great” and “not stainless, broken, terrible” is so distinct I am going to assume terrible human beings stuffing boxes with leftover junk staples and returning them. TIL also there are Monel metal stables too, surely a better candidate. This happened to my mother with a “smart bulb” which was not, same brand, dumb bulb. Nearly drove us mad trying to activate it.