Our liquid wax cartridges make an economical and reverant addition to any church or sanctuary. Emkay makes these wax cartridges right here in the United States and they eliminate the mess and fire safety hazzard that can be caused by refillable oil candles. Solid wax candles can leave stains on walls and altar cloths, but liquid candles burn cleaner, leaving you with a cleaner sanctuary and church. Another advantage of liquid candles is that they are more resonably priced because, instead of replacing the entire candle, you only have to refill this cartridge here. Our liquid wax cartridges have 90 hours of burn time before needing to be replaced. Send St. Patrick's Guild an email at info@stpatricksguild.com or call us at 1-800-652-9767 if you have questions regarding refillable candles or any of our products and and our friendly and knowledgable Church Supplies department will answer any questions you have.