I know I've seen a lot of people on this forum, using piddle pads for their ducks, they're disposable, hold a lot of moisture, and tend to be a lot easier to handle than laying out towel after towel for baby ducks, I've also noted that hardly anyone has any problem with this method of temporary bedding. My ducklings are 8 days old now, and they seem to be chewing and tugging on EVERYTHING, no matter how much food I give them (some of my friends suggested I start giving them greens and fruits). This wouldn't be a problem, if they wouldn't do it to their piddle pads, especially when they get wet.
I recently found a clear gel-like substance coming from the wet areas of the piddle pad, it doesn't smell bad, if anything it smells sweet; but I can't tell if my ducks are eating it, or just tasting it (they usually have it all over their bills) and if I'm the only one having this confusion. I wan't to go back to using piddle pads as its the cleaner, cheaper alternative, but if its going to prove harmful to my ducklings I'd much rather use something else.