I have 4 Pekin ranging from 12 to 16 weeks old. My son left the back door to the garage open where a freshly filled oil pan is. At first it looked like a couple of ducks rolled in some poop. I changed their pool water, and they went for a swim. I noticed they didn't get completely clean, but didn't think much of it. 6 hours later I walk to the back of the garage and see oil on the floor, then I realized it was the ducks. I never actually saw them in the garage, nor have I before. None of them are acting strange, they just look dirty. 1 Drake does have residue on the side of his face, but not on his bill. The rest of them just have it on their body. What should I do or look out for in regards to ingestion? Also if anybody has any suggestions on cleaning the oil off I would be grateful for that as well. Thank you Trim.