Ummm....guys, it is not generally a good idea to put non-potable stuff into beverage bottles, particularly if the original appearance of the bottle is not drastically altered. Kids, in particular, are apt to take a swig on the assumption that it if weren't soda pop, it wouldn't be in a soda pop bottle.

Putting automotive antifreeze (ethylene glycol-based) into two-liter soda bottles is one of the more egregious offenses, since the stuff not only looks sort of citrus-y, it actually tastes sweet and it doesn't take much to kill a youngster.

I can imagine someone mistaking slightly oxidized developer for an herbal tea, and in some cases the taste might actually be better