Montana Cans MXCH-9000 Chalk Spray Paint, 400ml, Black Temporary on non-porous surfaces Non-hazardous to plants Finish artwork with spray varnish to create long lasting permanent effects Temporary on non-porous surfaces Perfect for outdoor events and signage Safe to use near gardens or landscaping Deep-matte and high-covering Highly pigmented and chalk-based Works on almost any surface Will last several weeks to several months Finish artwork with spray varnish to create lasting permanent effects Manufactured to the highest standard Trusted by professional artists and amateurs alike