Continuity mistake: In this episode they say an alchemist has the power to control the dead but not bring them back to life. However, in the season three episode "Coyote Piper," the alchemist brings both the body in the alley and Piper back to life.
Continuity mistake: When Paige is at the bar with her newest charge we see the same extra walk by 3 times, going the same direction each time.
Other mistake: When Paige is talking to her charge in the club the same guy walks behind them twice in the scene. (00:14:00)
Answer: That was a mistake in the series.
Also, the episode is called 'Babies First Demon' and this alone tells us that it's Wyatt's first time in the field (so to speak) and as the sisters say, they've done a good job of clearing up their own magical messes so far. Nobody really knows how advanced Wyatt's powers are, or will become. That's why the cleaners appear, to nip things in the bud. The Cleaners didn't want to chance that the sisters could clean Wyatt's magic up, just incase they couldn't. Therefore intervening themselves, just in case.