How can I get the keyboard working again?

When I first got my laptop, it was working fine until I got a little water splash onto the keyboard. The first thing I did was drying the laptop and trying to take all of the water off. Few days later, the keyboard just stop working. So, i didn't bother to use the keyboard and believed that I needed a computer staff to help with this. I didn't bother to do that... Few weeks later, the keyboard started to work again! Now, it is just working on and off. So, I am guessing that it isn't badly damaged by little water. Is there anything else I can do about this? Any tips would be helpful. I am trying to avoid from meeting with the tech staff.. Thanks in advance.