Bottom Bracket Lube?
I would avoid doing this. If the Teflon lube has any kind of solvent in it (which it probably does to carry the Teflon), it will break down the grease in the bottom bracket. Eventually, the grease will thin out enough that it will flow out of the bottom bracket, and No More Lube=A Very Bad Thing.

If you are using a basic cartridge bottom bracket, they are typically not serviceable, and you'll have to replace it when it wears out. Higher end cartridge BBs have replaceable bearings.

If you have a more traditional-style cup/cone/spindle BB, you can service it, but you'll have to remove everything. After cleaning and checking for damage, reassemble with a heavier lube (marine grade bearing grease is good; available at most auto supply and hardware stores) to resist the wet, and go ride!