Chromene derivatives based on a chromene amide isolated from Amyris texana. Also disclosed are compositions containing chromene derivatives (synthetic or natural) based on a chromene amide isolated from Amyris texana. Also methods for repelling blood-sucking and biting insects, ticks and mites involving treating (or exposing) an object (e.g., mammals such as humans) or area (e.g., a surface such as human skin) with a blood-sucking and biting insects, ticks and mites repelling effective amount of at least one compound selected from chromene derivatives (synthetic or natural) based on a chromene amide isolated from Amyris texana.
