Lynn, what is your ratio of wax to FO, and how large are your tarts? The reason I ask is because I use 1 lb soy, 1 ounce bees wax, and 1 ounce FO. My tarts are basically 1 ounce each. I have a a large home with 20 foot ceilings and one tart does kitchen, living room, den, dining room and loft. The scent is very strong. Mary Lou PS...the reason I use the stretch wrap is because soy is softer and tends to smear the bags. So the stretch wrap keeps the bags nice and clear.