Well, my nice water feature got soaped last night. It's probably been a good 2 years since that happened. At that time, I tried to do some research on an anti-suds agent that you could add to your water feature that would prevent this from happening. And at the time, I didn't find any product that seemed like it would really work. Mine is a big pondless waterfall. Anyone know of - or better yet, have personal experience with - a product that prevents the foam and suds if someone soaps your fountain?