How long should I keep my iPhone in rice?

It fell in the toilet on the 3rd for about 10 secs so I ran upstairs to my kitchen and put it in a bowl of rice hours later I went and turned the phone off the next night I put it in a bag of rice how long should I leave it in the rice? How long should I wait before turning it back on? Also it has this stuff called ghost armor on it so I don't think it got on the screen but that stuff just keeps it from getting scratched anything else I could do to pliz let me know oh and also should I try and charge it? Or what?

Mine fell in the tub.Id leave it in rice overnight. Thats what i did. My phone works now.