Review (5/5): Working great for hand sanitizer
I needed some small spray bottles for some liquid (non-gel) hand sanitizer I'd recently purchased. These bottles work pretty well. I easily opened up, poured in the liquid, and the spray started quickly and smoothly. I have not yet seen any clogs or other spray interruptions.
I've dropped these bottles at least twice on the ground. They might have come apart (taking a few seconds to put back together), but nothing cracked or broke. They are quite solid and do not squeeze whatsoever. Nonetheless, if you're putting them in your pocket or in some other bag, make sure you're always keeping the lid tight or else you might get some spill.
If you're looking for a heavier duty plastic bottle that's not squeezable, these work great. If those things don't matter to you, go cheaper.