There is an earlier post about cats not being interested in catnip. Yesterday I tried an experiment using catnip and it worked! I made a tea out of it (about 1 oz)and dumped it into their (1/2 gal) drinking water container. Now, I did not leave it in there, but put fresh water in their bowl immediately afterwards. But the cats who did drink out of it were more playful and even aggressive for a few minutes.

...........wayne