Putting unit in lowest sleep mode to save battery

I'm told I should be getting 35ma in sleep mode, but I'm getting about 65.

Can someone show me some code that I can put in my setup that will put it in true sleep so I can test/compare? I've tried several versions of sleep, but havnet figured it out yet.

void setup()
{
   //go to sleep here
}

void loop()
{
}

Thanks!

http://www.gammon.com.au/power

http://www.engblaze.com/hush-little-microprocessor-avr-and-arduino-sleep-mode-basics/

May be of help.

Weedpharma