EXCLUSIVE FRAGRANCE CRYSTALS FILTER OUT A BROAD SPECTRUM OF MALODORS IN DUMPSTERS TRASH COMPACTORS SEWAGE TREATMENT PLANTS LANDFILLS GARBAGE TRUCKS DUMPSITES ETC. SPECIAL CITRONELLA OIL ADDITIVE WORKS TO KEEP FLYING INSECTS AT BAY. (THE CASE OF ONE DOZEN CONTAINS ONE DOZEN 1 LB SHAKER-STYLE CONTAINERS.)