Try hand sanitizer!
Just squeeze a good bit on the spot, and start to rub. If it's really difficult, and doesn't seem to be coming out, try picking at it a bit and rubbing harder.
It should come out pretty easily.
Then just wash the item of clothing like normal. :)
Thanks! I'll give it a try. I ofcourse had to sit in some tree sap when I was wearing my favourite white skort. : (