The Day The Magic Died - S5-E15
Continuity mistake: In the beginning, Paige is wearing a shirt with the scrunching sleeve on the right and slanting on the left. In following scenes, the scrunching sleeve is on the left and slanting on the right. (00:07:40)
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.