Devices for dispensing an air treatment chemical such as insect repellent are disclosed. There is a chimney housing (14) having a side wall (34) defining an internal cavity (94). There is also a caddy (22) assembly supported by the housing (14) and having an upper caddy frame (66) configured to mount a substrate (30) bearing (114) an air treatment chemical adjacent an upper portion of the housing (14), and a candle holder (126) coupled to the upper caddy frame (66) and configured to support a candle (26) having a wick (194) adjacent a lower portion of the housing (14). There is also a substrate (30) bearing (114) air treatment chemical suitable to be supported by the upper caddy frame (66), and a candle (26) suitable to be supported by the candle holder (126). A refill kit for such devices is also disclosed. Also disclosed is an embodiment with a sand core bearing (114) the repellent, a heat deflector positioned under the sand core, and a candle (26) positioned under the heat deflector.
