Frigo® winter Additivecaf Frigo® winter additive is used with Orus® tabs and Orus® squeegee bucket solution as the necessary complement to extend the effective temperature range for below freezing conditions. Frigo® is a methanol-based solution that prevents freezing to -40°F. Frigo® can also be mixed with OTIS multi-surface cleaner to keep your cleaning solution from freezing. Frigo® extends your cleaning capabilities year-round using only what you need to mix your solution to match your weather - a key Leed® principle in environmentally friendly operations. Use with the Frigo® pump for easy and accurate measuring.