Hi all, I have a nice clean deer skull I found that is leaking grease (getting yellow) so I did a bit of research and put it in a 10 gallon aquarium with some clear Ivory dishsoap. It's been a few days and it seems like there is MORE yellow around the eyes, and the skull is kinda getting blue (which is weird cuz it's a clear liquid). Any advice? Should I try another specific type of dish soap? I could not find clear dawn dish soap. Thanks!