No odor. No mess. Non-staining. Flushes & kills. Kills roaches as they hatch. The dry powerful spray penetrates deep into cracks and crevices to drive roaches out to die. Kills insects you see and those you don't. Powerful flushing action drives insects out of hiding and kills them. Innovative dry spray - no odor - no mess - no roaches. Dry spray carries the killing ingredient to the roaches. Guaranteed to work or your money back. Guarantee: if you are not completely satisfied with this Bengal product, call 225-753-1313 weekdays 8:30 am - 4:00 pm Central Time. www.bengal.com.