Good lord, what do you do? I have a whole rabbit barn (10 water bottles) and 4 pens of chickens and it takes me no more than 30 minutes! LOL
Unless you clean yours every single day..
I'm probably out there every day for an hour to an hour and a half. It seems like every day one of the big waterers are empty and my water hose has no pressure, so it... takes... forever... to... fill... up. I have a banty coop, three pens, and four bachelor pads to tend.
During the height of the herpes fiasco I was bleaching everyone's waterers, spraying everything with Oxine, AND giving antibiotics to stave off secondary infections. That's when they seemed to occupy every free minute I had.
I wouldn't change it, though. Now that nobody's laying everyone free ranges together every day while I putter around.