Visible crew/equipment: Just after Paige casts the spell to rid Piper and Leo of the gods inside them, the tip of the boom mike is just in shot above Paige's head. (00:33:10)
Visible crew/equipment: When Paige explains to Phoebe that someone tried to kidnap baby Chris, when the shot is on Paige you can see the white tape of the actor's cue marks on the floor. (00:29:05)
Continuity mistake: At the beginning of the show when Piper comes into the kitchen to help Paige, she is wearing slippers. In the next shot, when she is by Wyatt's chair, she is wearing flip flops.
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.