Easy use! For use in a wax warmer only! Each cup makes 2-3 trays depending on warmer size. You should expect a gel wax melt to give you up to 40 hours of burn time, as the gel has a much higher melting point. To get the most out of your melt, turn it over after every use (ensuring the gel wax melt has cooled) so the fragrance can disperse evenly around the room.