Backyard Bash
20 Gallon Slime Powder Kit
Makes 20 gallons of thick, brightly colored slime from our proprietary powder — enough for a backyard party, a youth group night, or a classroom fundraiser of about 10–25 people. Just add water and it thickens in minutes: no cooking, no measuring, no mixing station. Ships from Florida.
$5.99 flat shipping · free over $100 · ships in 1–3 business days
Pick your colors and add supplies in the next step.
What's in the 20 gallon kit
Powder for 20 gallons
Enough of our proprietary powder to mix 20 gallons of thick, vivid slime. Perfect for 10–25 people.
Your choice of color
Red, green, blue or yellow — or one of each, split across the kit, at no extra cost.
Instructions that fit on a card
Add water, stir, wait a few minutes. There is no cooking, no measuring by weight, and no mixing station to build.
Add supplies at kit pricing
Optional, and cheaper bought with a kit than separately. You can also buy all of these locally — we would rather tell you that than sell you something you already own.
Pump Sprayers
Maximum slime coverage
$3$5each
We suggest about 12 for a 20 gallon event.
Mixing Paddle
Attach to any drill for easy mixing
$8$12each
We suggest about 1 for a 20 gallon event.
Safety Goggles
Keep the slime out of your eyes
$2$4each
We suggest about 10 for a 20 gallon event.
Not sure this is the right size?
Shipping and returns
Ships from Florida via USPS, $5.99 flat and free over $100. Packed within 1–3 business days, then typically 5–7 business days in transit. Unopened kits can be returned within 30 days.
Full shipping & returns policy · Ordering for a dated event? Ask us first
The Slime Co · SLIME-KIT-20G