At a minimum take the battery out and leave it somewhere warm and dry for a few days before trying again.
The trouble with juice though is when it drys it leaves behind a sticky residue that may need to be cleaned off wherever it has ended up, which might be impossible.
If it seems totally dead and you don't want to pay someone to fix it then the last ditch effort when you have given up hope is to totally dismantle it and wash every part thoroughly in water until all trace of the juice is gone and then leave it to dry for a week before reassembling. This has a small chance of success for the amount of effort though.
Water does not hurt electronics, what it does do though is conduct electricity to places it's not supposed to go and then the electricity fries things. So as long as there is no power source it's safe to wash something in water as long as it's completely dry before putting any power back into it. The only other risk is corrosion. Liquids get into all the tiny little crevices and take a lot longer to dry out than you probably think.
For all the doubters, I once resurrected a PC that was killed by cat pee by dismantling it and hosing it down with a garden hose and scraping the corrosion off the contacts of the RAM. From totally dead to working just fine thanks to a garden hose. Not a fun job though. I even had one repair guy suggest a cold rinse in the dishwasher (but who want's cat pee inside the dishwasher.... ever.. )