my practice is to pour 1 oz out of the 8oz bottle, into the 1 oz bottle, put the 7 0z back in the freezer. it lasts a long time usually a few months at least - cause I use a lot. buy in 8 oz, bottles 2 or 3 at an order from Lone Star. would go broke if I bought in little bottles from LHS. have not had any go bad. dick