Hi Bel, I am a new member too but I have been on these boards many times just reading and learning. This board is great! My tarts are very strong and will fill several rooms very nicely I am more than happy to share with you my formula. I use 100% Pillar of Bliss wax from Nature's Garden Heat wax to 195* Add dye Add fragrance oil at 185* Stir for 3 minutes and then pour My tarts smell very good BUT I have found that when I use oils from Peak that my tarts will last for almost 3 whole days. If I use oils from Natures Garden, the scent usually only lasts between 8-24 hours depending on the fragrance. Peak's oil are more expensive than Nature's garden but the quality is well worth it to have repeat customers. I want to switch 100% to Peak Oils but they do not have all the fragrances t hat Nature's Garden does, so I go back and forth between the two suppliers. Good luck and let me know how this works for you