Almost all of my little travel size 3 oz. bottles do not contain what the label says. I reuse them and fill them with other things. I may have shampoo in a hand lotion bottle, or facial toner in a shampoo bottle. Some of them have been used so much the writing has worn off-they are essentially unmarked. Almost none show the ounces.

Is TSA going to open and sniff to see if the ingredients match the label? If not, will my little bottles be taken away? What if the ounces aren't marked? Will screeners just eyeball size and let them through if the "look" to be about 3 ouces?