They stayed so long in the pool on Friday I was really afraid they had moved in. I took this pic from my office window Friday afternoon. See Mr. Duck marching around like he owns the joint??
I went outside later and they were gone. I checked again for eggs and found none.
After reading Snow's comments about duck poop and starting to find some really big piles... I decided to not be such a hospitable hostess. Yesterday morning when they landed in the pool, I went out and shooed them which did nothing. So I got the pool brush. Mrs. Duck flew into my neighbor's tree. Mr. Duck flew to my roof and marched around up there, fussing at me the whole time. Mrs. Duck got mad at him and flew over him circling and calling to him and he finally flew off with her.
After telling my pool guy ('tilla's dad) about this, he reassured me I'm doing the right thing. He says that baby ducks cannot survive in a pool. The chemicals will kill them. He regularly fishes out entire families of duckings from his clients pools.
Still, I'm betting this is going to be a daily process for a while.