Resource Information


Published in: Hawaii Landscape, Official Publication of the Landscape Industry Council of Hawaii.  Jan/Feb 1998.  Vol 2, No. 1,  p. 13.

By:  A. H. Hara

CTAHR, Dept. of PEPS, Beaumont Agric. Res. Center, University of Hawaii-Manoa, 461 W. Lanikaula St., Hilo, Hawaii 96720, Phone (808) 974-4105

TARGETED PEST:  Two-striped slug, Veronicella cubensis

Copper hydroxide is usually used as a fungicide but is also formulated as a root growth regulator that prevents root-bound containers. The College of Tropical Agriculture at the University of Hawaii discovered that the copper hydroxide coating is very repellent to the two-striped slug, Veronicella cubensis. Plastic pots, grow bags and weed mats coated with a special formulation of copper hydroxide significantly repelled slugs. (See Spinout, Griffin Corporation,

For example, in one test, pots were placed in a contained area of 15 square feet with 500 slugs. Copper hydroxide-coated pots harbored an average of zero slugs per pot while uncoated pots harbored an average of 24 slugs per pot.

Presently, copper hydroxide-coated products are not registered for use as a molluscicide but registered only as a root growth regulator.

For more information or a detailed report, call 974-4105,  FAX  974-4110 or e-mail at arnold

Dr. Arnold Hara is a professor in entomology in the Department of Plant and Environmental Protection Sciences at the University of Hawaii Manoa, stationed at Beaumont Agricultural Research Center in Hilo.


Use pesticides safely. Follow the pesticide label. Consult with the Cooperative Extension Service or the Hawai'i State Department of Agriculture for authorized special local need registrations or additional information. The user is responsible for the proper use, application, storage, and disposal of pesticides.

Reference to a company or product name does not imply approval or recommendation of the product by the College of Tropical Agriculture and Human Resources, Cooperative Extension Service University of Hawaii, or the United State Department of Agriculture and does not imply its approval to the exclusion of other products that may be suitable. All materials should be used in accordance with label instructions or manufacturer's directions.

Product Name: Spinout
Manufacturer’s Name: Griffin Corporation
Address: P.O. Box 1847   Valdosta, GA   31603-1847
Composition: Copper hydroxide

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