A wax-treated canvas tarp typically requires 3 to 14 days for its initial chemical smell to noticeably fade and 2 to 8 weeks for the odor to largely dissipate under normal conditions. Off-gassing duration depends on the wax formulation, mineral spirit treatment, storage temperature, humidity, airflow, and whether the tarp receives continuous outdoor aeration. Proper ventilation accelerates wax odor breakdown without compromising the tarp's protective finish.Modern wax-treated canvas tarps are ma