First I should explain that there are no gadgets like liquid water, teach regulations to do iPhone ,iPod ,iPad, Macbook air or Macbook Pro get liquid water damage. . Please dont think waiting will solve the problem as it will get worse not better.
In addition, these three things must be done:
1.If You have the screwdriver try to remove the battery of your iPhone , Macbook And iPad release the connector from logicboard to the battery.
2.Clean all visible water on the outside and shake / dry iPhone, Macbook , iPad get water damage leads to the bottom of the docking or speaker or motherboard.
3.Use rice grain to soak it into the plastic to eliminate moisture in the iPhone iPod iPad get liquid water damage overnight.
After this iPhone , iPad , Macbook that get liquid water damage or iPhone , Macbook, iPad splashed by Water usually just need to replace the battery, cleaning or LCD. Rice grain is important so You can wait for a few days without worrying about corrosion. The most important thing is please do not try to keep turning it on after realising there is some problem after step 3.
The Future problem of iPhone , iPad , Macbook get liquid water damage:
1. Capacitor on the logicboard still work well but they may discharge wrong current which lead to noise or instability
2. Corrosion can make electronic route dissapear which mean there is no connection at all, for this problem there is only one solution which is that you need to find a technical person to reboot the motherboard.