Savey 50-WP (hexythiazox) is a highly selective miticide that demonstrates excellent ovicidal and immature mite activity against Tetranychidae mites. Field efficacy studies were conducted in 1984-88 and 1996 to determine the ovicidal/miticidal activity of Savey (hexythiazox) against major mite pest species of western cotton. Savey applied at 3 - 5 oz/A provided commercially acceptable control of Tetranychus turkestani, T. urticae and T. pacificus. Results collected to date suggest that Savey fits best in early-season cotton production where more complete coverage can be obtained with ground equipment and mite populations are low, but building. Savey does not adversely effect beneficial insects or mites.