The ZF-KIT includes ( A bottle of oil, an insert and a key )

One ZF-Gallon of oil, is equivalent to ten bottles of oil

Stop floor drain odors with the 

ZF-FLOOR DRAIN OIL

BIODEGRADABLE ODOR BARRIER VEGETABLE OIL
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TROUGH SYSTEM: ZFT-04 1.2M & ZFT-05 1.8M