Negative Positive
Title: Great for keeping water in; not for letting it out
Review: I have fiddled with these bottles every which way to try to get them to work for our small rodents; they simply don't allow the water to come out readily. I had to take out and shake the bottle each time the animals wanted a drink, which is not practical or healthy. Get pretty much any old generic bottle and it will be better for your pets than these.
Is the review positive or negative? 