This morning, cleaning-and-errands service Exec is spreading its message of free time and idle hands to four new cities: Boston, Los Angeles, Chicago, and New York City.

The company just started busting out of its Bay Area home last month with a cleaning service launch in San Diego; it also has a presence in Seattle now.

“In order to scale, the main thing we’ve done in the past several months is focus on building our logistics technology behind the scenes to provide the easiest possible customer experience,” Exec (and Justin.tv) founder Justin Kan told VentureBeat in a brief email.

“A lot of what we do is figure out what our operations people are doing on a day-to-day basis every week and then build tools and tech to automate those processes (and then repeat, week after week). That’s let us scale from one to three to seven cities without adding additional core team members in SF.”

To promote the launches, Exec is announcing a sort of insane-sounding contest: Whichever city gets the most new cleaning visits by next Wednesday gets all its cleanings free of charge. You can track the action at a special site set up for that purpose.

Exec Cleaning Race

Exec Cleaning Race

The startup also recently launched an iOS app for booking cleaning appointments while on the go; moreover, it gave its website a design overhaul last month, thanks to former Microsoftie Karen Cheng.

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