Time to rescue Ms. Frizzle from Hell with the power of science!

Class is in session at the School of Fail!

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A dad in Sooke, British Columbia, bought his daughter Mya some "monster spray" to ward off any creepy creatures that might be lurking in her bedroom at night.

The photo of the monster spray was posted on Reddit, with an official pharmacy label reading: "Spray around the bedroom at night before bedtime and repeat if needed."

Dee Vivian, the pharmacy technician who printed the labels, told BuzzFeed Canada that the father brought in the bottle and asked her to print off a couple labels. She didn't even charge for it.

The dad had apparently gotten the idea from other photos posted online.

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Better luck next time, monsters. You won't be messing with Mya ever again!

He's a realist... sort of.