If it's just on the Laptop Keyboard, you can gently try to pop a key off. Many times, the Laptop Keyboard area is further protected underneath with a rubber or plastic membrane. Clean up what you can. If they come off fairly easily, take a picture of the keyboard before you remove any more, so you know how to put them all back on. You can also lay them out on a surface, in order, as you take them off. Once you have access beneath the keys, clean all the juice out of the HP Laptop Keyboard with damp cloths and/or cotton swabs. Also clean the keys as best you can. If you have the picture of the layout, you can just throw them in a colander and rinse them off with warm water in the sink for a bit. You may need to take the keyboard apart further to get all the juice out of the various layers. Once you get it all cleaned up, make sure it is completely 100% dry before you start putting it back together. This may take 12 hours or more.
Replacing a new keyboard such as Compaq Laptop Keyboard is another way to solve it from papatek.