Invisible Spray 2.0 Professional Bottle (80-110 sq ft)Create stunning works of art that only appear when it rains! For the serious artists, this bottle of Rainworks Invisible Spray 2. 0 contains 16 fluid ounces, and is available with discounts when buying in bulk. Each 16oz bottle has enough spray to cover approximately 80 110 square feet (7. 4 10. 2 m). Lets give people everywhere a reason to look forward to rainy days!