Please have your friend check the information that came with the unit. Many of the decorator waterfalls are made from materials that are dangerous for use with consumption.
We had the same problem with our cat and were unable to find one of the decorator waterfalls that wasn't dangerous. We finally decided on a pet fountain we found at Walmart.
And yes, you are so right about persnickety cats and the getting of their way. Alas, what can you do, but love them? ... View related article.
This won't solve it today, but Amazon.com has portable battery-operated blacklights made just for this purpose. They also come in very handy for locating scorpions. ... View related article.
