Is There a Woogy in the House? - S1-E15
Continuity mistake: At the beginning of the final scene in the attic, the view from the window prominently features the Transamerica Pyramid. At the end of the scene, the view is completely different, showing the Ferry Building and the Bay Bridge. (00:41:30)
Is There a Woogy in the House? - S1-E15
Continuity mistake: At the beginning and throughout most of the episode you can see the entrance to the basement. If you look to the right of the door you can see a light switch by the door with the cover on it. At the end of the episode they show the entrance but this time the cover to the light switch is off.
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.