|This is one of the two missions to setup the The Jewel Store Job mission. It is only available if you choose the Smart option at the end of Casing the Jewel Store.|
One of the things need to do the stealthy option for the jewelry store heist is an exterminator's van. Once you finish Casing the Jewel Store, Lester will give you a call and tell you where a van is located. There is a very easy way to steal the van without any trouble at all.
When you get to Bugstars, go behind the building and use stealth to approach the guy by the van. Knock him out and then get in the van and bring it back to Lester's place to finish the mission.