I would imagine adults would catch on that they had to get water that way instead of from a bowl, but I'm not 100% sure, hopefully someone will chime in that has done so. I also love these because they will be great for travel and for attaching to the play pen I bought for my MiMi...so, I will be buying 2 of them
...one for home by her food. One in her play pen at work that I can also use for travel as well. I'm excited about these.