My wife bought these, and every time I would get something in my eye, she'd be like, "wait let me get the eye washer thingy." And I'd be like, "omg, I don't need no stupid eye wash thingy! Those are dumb." And she'd say, "Just use it! It will clean it out!" And I'd be all, "I have natural tears, woman! God gave me a built-in a cleaning mechanism. It will clear out before you get back with here with that stupid little shot glass!" And she'd be like, "It's not a shot glass, dummy! It's shaped for your eye!"Well, sure enough, I got something in my eye that wouldn't come out. So I finally let her plop this thing onto my eye. The water was cold as balls! It was very unpleasant. But by God, it worked! Got that sucker out. She was like, "See?? It works!" And I was like, "I never said it doesn't work, just that I don't need it every time I get spec of dust in my eye!"So, it works well. Bailed me out when I needed it. Just know that your wife is going to come at you like a billy goat and shove it into your face every time she catches you rubbing your eye.