I've posted about it before, and the long-time hobbyists may be sick of me mentioning it, but I am a HUGE fan of the depilatory cream called "Magic Razorless Shave". You can get it at most any drugstore, or
online at Amazon. It is really easy to use. Just apply liberally to the area and wait 7-8 minutes. Then jump in the shower and wipe it off with a washcloth. The hair comes with it. If it has been more than a month or so, I may have to scrub the area a bit with the cloth, but not too hard. The hair just falls off.
I've had guys say to me that they are scared that it will burn, but I've never had any discomfort. I've even done it on my ass crack and no issues. I do take care to not get it on my penis, just in case (I usually wear a cheap condom while I apply it -- one of those free ones that I'd never use for sex).
It doesn't smell great, so I'd make sure not to do it right before a date. Wouldn't want a girl to get excited to see my smooth balls but be repulsed by the chemical odor. Anyway, some talcum powder after the shower feels SO nice down there and does a good job with the smell.
It is designed for and marketed to African-American men who shave their heads. It is also good for beards. They sell it in a powder that you mix with water to make a paste -- it's a bit cheaper but a pain in the ass to use.