I recently added 2 Indian Runners to my garden for pest help. I'm a first time duck owner so I know little other than what I've been researching online. My question is this.... my garden is in a low spot and in order to keep excess rain water from flowing through the middle of it I've ditched around it's perimeter. The water collects in a low corner and the ducks spend a considerable amount of time messing about in it. They drill into the mud walls, constantly looking for whatever and doing whatever it is that ducks do. I don't have a clue but they're fun to watch. The water which would otherwise be stagnant if it weren't for their constant mucking about in it, is looking pretty ugly. I wouldn't say "foul" but it ain't pretty. Are the ducks in any danger here, are they fouling their own "pond" to the degree it could be harmful? Thanks for any input!