Hi Giz, I had the same situation a year ago. I don't stay at my place full time and I tried to run them off, and was fairly effective - except for 2 that stayed, and had 3 babies. This year I had one pair that I never saw until they and their 5 babies waddeled into the pond one day, and one set that nested right out in the open and couldn't care less when I fished 20' away. Well, they cranked out 6 little pooping machines. I think they were here last year. They do make a mess, but aren't that bad. My main concern is what to expect next year. I'm afraid the word is going to go thru their colonies like uh s*** thru a goose, and I'll have wall-to-wall "flying toilets" next year. I'd try to run them off.
