great alternative to glass [SEP] i really like these bottles i have used so far one for magnesium oil spray and other for a toner the sprayers work really well no clogs to speak of yeti prefer glass bottles when working with higher concentrations of essential oils especially citrus however i usually stick to or less since larger glass bottles are heavy and can be hard to grasp i have rheumatoid arthritis and my hands dont always do what they are told these bottles are perfect for me they are light easy to hold and the pet plastic is safe to use with essential oils if i drop them it will not be a major catastrophe the bottle cracking is the worst case scenario cracking is pretty unlikely these are sturdy bottles