Review on Portable Dog Water Bottle Bowl - 15.2Oz Capacity, Leak Proof Dispenser For Walking, Travelling & Hiking - Rotatable Trough For Medium & Small Dogs Lightweight by Kenneth Harris

Like other reviewers, it seems like this worked as expected for a little while. But then it stopped working and isn’t letting air into the bottle to allow for water to come out. There is a tiny little hole on the inside of the button mechanism that should let air in so that it doesn’t get vacuum locked, but somehow it no longer works. I’ve tried blowing it out and making sure it isn’t clogged or blocked, but that doesn’t fix the issue. The only way to get it to work now is to slightly unscrew the bottle to let air in so that the water can come out. But that is messy and leaky if not done just perfectly.