Walmart has 18oz First Alert AF400 Extinguishing Aerosol EZ Fire Spray (AF400-12) on sale for $7. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+, otherwise select free store pickup where available.

• The First Alert Tundra Portable Fire Extinguisher discharges 4x longer than a traditional fire extinguisher, providing 32 seconds of firefighting time
• Light aerosol can is easy to hold, carry, and use; ideal for kitchen, garage, boat, RV, dorm, and more
• Extinguishes paper, fabric, wood, grease, and electrical fires
• Formula is biodegradable and nontoxic and wipes clean
• This product has been tested to the qualified performance requirements of UL 711, UL 711A and KOFEIC 0108 by an independent Nationally Recognized Testing Laboratory (NRTL).
• Restricted in CA, NV and NY due to legislation
• Safe storage for this product is between 32-107 degrees F.