Review (4/5): Needs instructions for first use, but so far so good
FIRST TIME USE: You need to fill it with your liquid of choice, screw on the cap tightly, and THEN turn the bottle sideways (horizontally) and pump it for a bit until the liquid starts to dispense.
If you don't do this, and simply fill it and try to pump it while it's standing up vertically, the pump won't siphon up any of the liquid and it won't dispense anything. This wasn't stated anywhere on the packaging, and the only way I figured this out is because sometimes spray bottles won't spray if you have them tilted too much.
So far it's working okay, but if it stops dispensing unless I turn it sideways again I'm going to change my rating to 1 star and request a return/refund, since you shouldn't have to do that. (other products that come in pump bottles by default don't require it)