Walmart has Testors Spray Chalk 4 Color kit on Clearance for $3.50 YMMV.
Use on grass, snow, asphalt, concrete, glass and more to create chalk designs and markings
Non-toxic formula is safe for use around people, pets and plants
Instantly turns to a powder chalk look when sprayed from can
Mega Size 12 oz can covers up to 160 linear feet
Temporary finish washes away with water
Easy to use comfort spray tip goes where regular sidewalk chalk can’t
https://www.walmart.com/ip/Testor…/447689924
https://brickseek.com/walmart-inv…=44768992
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