Out of stock

Ages 3+

Puking Pumpkin Science


Add a dash of spooky science to your Halloween decor — with an eerie, oozy chemical concoction you whip up yourself! Put your measuring and color-mixing skills to the test while blending together baking soda, foaming gel, and liquid colors. Pour the mixture into a carved pumpkin from home, add water and citric acid, then sit back as the chemicals react and make your pumpkin “puke”! Barf has never before been such a blast.

Why it’s awesome

  1. puking pumpkin collateral

    Creepy creations

    Decorate for Halloween with pumpkins and your imagination!

  2. puking pumpkin bubbling

    Eerie experiments

    See what happens when citric acid, foaming gel, and baking soda mix!

What’s included?

  • baking soda 7.9 oz (225 g)

  • citric acid 5.6 oz (160 g)

  • foaming gel 2.0 fl oz (60 ml)

  • 3 liquid color bottles, each 0.3 fl oz (10 ml)

  • 2 scoops

  • flask

  • funnel

  • illustrated instruction sheet

Topics explored

  1. Chemical reactions

  2. Mixing colors

  3. Halloween fun

Additional details

From the desk of the product designer:

Behind the design

What do you do when pumpkins are out of season? You get creative! We had to figure out exactly what ingredient amounts we needed to make a massive, messy chemical reaction. But since we couldn't use a real pumpkin for our tests, we used a jack-o'-lantern bucket instead!

- KiwiCo Product Designer

By the numbers


Jack o'-lantern bucket tests


Names we considered before landing on Puking Pumpkin


Hours spend searching for pumpkins to carve in the middle of April



9 reviews



    This was a hit! It came just in time for our Guy Fawkes night so he got to do the experiment with his aunty. The expression on his face was priceless! Thank you!



    Both boys were fascinated by this. The 7 year old loves all the projects he's received.



    Bought as a gift for a very hands-on 5 year old who absolutely loved it. Parents reported that she loved it so much we she won't stop asking for pumpkins to keep doing it to!



    Got this as a gift for my niece and nephew and they loved it!

    Gramma and Jackson


    My grandson absolutely LOVED this kit! I had to buy another kit because he was so excited. Great kit, the directions were helpful and on point. One of the best kits offered.



    so much fun! our kids loved it

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