How do I clean tree pitch off bottom of skis?

BC sking over some little trees and have sticky sap on my skis?
What will take it off gently?
Thank you

I use citrus cleaner and a rag -- usually does the trick. You can also give the skis a hot wax and scrape them while the wax is still hot.

olive oil on a kitchen towel works to get it off my dog's paws.

But citrus cleaner probably better for skis.

+1 Citrus cleaner

If you are set up for it the best possible way and healthiest for the skis is to do a hot scrape.
Doing one ski at a time-
Drip ski wax liberally on the ski and run your iron on the ski so it melts all the wax into the base.
Wait a slight bit (not to long) and use a metal scraper to completely scrape the base.
The wax should curl up or ribbon up as you scrape the ski. You may see darker colors and stuff in the wax, that is all the contaminants being pulled into the wax.
This will take the all the crap off the ski, if the scraper is sharp enough it will take filament hairs off the base too (like a bikini waxing, not that I would know), furthermore it conditions the ski base for better wax absorption for future waxing.
I usually wax my skis right after a hot wax, the normal routine since it's all ready to go.

This is better than citrus base cleaners that pull the conditioned wax out of the ski.
I only use citrus base cleaners in desperate times, because it destroys the wax conditioning that I have done to my skis.
In fact to go one step further,
It takes about 5 wax jobs to start to condition a ski after a base grind.

Good luck!

Go ski a volcano!

Works for me every time.