I have had some i kept in my basement(cool,no sunlight,etc.).Ive had some in a big bottle it came in,for 2years now.Its just as good as it was when i bought it.Also ive got earth scent,acorn,etc.They too are just fine.There is a reason they use the white bottles the stuff is stored in.They are a food grade type plastic.Ive just purchased a BUNCHof earth scented-got it all for next to nothin.just pour it in too the 32oz.bottles your buddies empty,keep caps tite,and out of sunlight and away from heat.Havent had a problem yet.