Check the listing for details. Vaportek Optimum 4000 Odor Controller. Condition: New. Listed at 249.90 USD. The Optimum 4000 is a dry vapor dispensing system that eliminates malodors quickly and safely, using a simple, spill-proof, replaceable air treatment cartridge. It dispenses a dry, non-toxic vapor that was originally designed to be used in hospitals - it is safe for any application. To use, simply choose between a standard (90 days) and high output (120 days) cartridge, uncap the cartridge, insert in the back of the machine, and set the machine for the desired vapor output. The Optimum can cover 20,000 cubic feet of area, and uses only 16 watts of electricity. It measures 5" x 5" x 12", and weighs less than 5 lbs. Comes direct from the manufacturer with a five year limited warranty, and is made by Vaportek in the USA. ***CARTRIDGES SOLD SEPARATELY***