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"Take a leap and wash with this joke soap."
— Product description[src]

Frog Spawn Soap was a magical joke product that is sold by Zonko's Joke Shop.[1] It caused frogs to spawn in water.[2]


During the 1986–1987 school year at Hogwarts School of Witchcraft and Wizardry, after a Flying class, Nymphadora Tonks expressed that the first thing she planned to do when going to Hogsmeade, was to buy the Frog Spawn Soap, then later slip it into the girls' bathroom.[3] In the beginning of a Herbology class, a third year complained about trying to wash that morning, only to have the soap being full of tadpoles,[4] most likely the result of Tonks's promised prank.

Frogs in the Prefects' Bathroom, as a result of this soap being released into the bath water

During the 1988–1989 school year, Jacob's sibling placed some Frog Spawn Soap into the bath in the Prefects' Bathroom, in order to appease Peeves by unleashing various forms of chaos upon the school, so he would give them the Vault portrait. This individual act of chaos caused the bathroom to become full of frogs.[2]

Ron Weasley and Harry Potter purchased some on a trip to Hogsmeade in 1994.[1]


Notes and references

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Harry Potter and the Prisoner of Azkaban, Chapter 14 (Snape's Grudge)
  2. 2.0 2.1 2.2 2.3 Harry Potter: Hogwarts Mystery, Year 5, Chapter 22 (Agent of Chaos)
  3. Harry Potter: Hogwarts Mystery, Year 3, Chapter 1 (Year Three Begins) - Flying Lesson "Rolling"
  4. Harry Potter: Hogwarts Mystery, Year 3, Chapter 4 (Filching from Filch) - Herbology Lesson "Stinksap"