How long to leave iPhone 4s in rice? And?

I dropped my 5 day old White iPhone 4s in water on accident /: it was in it for 5-6 seconds. I watched the screen go black. I was in shock took me a second to take it out. I could hear texts and feel vibrations from texts after. I could hear Siri. But my screen was black. Eventually.sound went out. But, i was able to manage to turn it off. (probably too late by then, i know). My question is, how long do i keep it in rice? And i have no insurance/no protection plan from Best Buy. So i might have to do the OOW (Out of Warranty) through Apple. Have you ever done that. Do the refurb phones cause trouble? Thanks for your help.

Added (1). Thanks man. I've taken it out a few times being nosey and impatient so it probably slowed the process down.lol. And, there's an Apple store in my city. So i called them and they said i can go there and replace it for 199. I just don't know if i should trust a Refurbished phone.

Personally I would leave it in for 24 hours, which is plenty of time for the phone to dry out. If it still doesn't work after 24 hours, then you may be out of luck. As for the OOW, the refurb phones are refurbished by Apple so don't cause trouble by themselves, but Apple will charge a fee to repair your phone. You have to send your phone to them via the instructions included in the packaging of the refurb phone when it arrives.