ScatMat

ScatMat. - The Red Ferret Journal

Just place this flexible clear plastic mat with embedded electrical grid on any surface you'd like to protect. A safe low-voltage battery pack zaps paws with a low-level electrical pulse on contact. Completely harmless, but definitely gets their attention, and discourages bad habits! 3 selectable intensity levels for any size cat or dog. One 9-volt battery lasts for 6 months, or about 10,000 activations

I wonder if this works on children? Probably not as effective as hot saucing (as endorsed by Blair from the Facts of Life) or my preferred method of child control might still be fun to experiment though.