Garlic Barrier®, when used strictly as a seed treatment, reduced thrips damage compared to the untreated control in one of two tests but was inferior to the Temik treatment in both tests. Stand was reduced by Garlic Barrier treatment in one of these tests. Adult thrips numbers in 1995 were significantly lower in Temik-treated plots compared to the untreated 14 days after planting but did not differ from the Garlic Barrier treatment. Adult numbers did not differ in 1996. Larval thrips numbers were significantly reduced by Temik in 1995 at 21 and 28 days after planting. Larval thrips numbers in 1996 did not differ among treatments. Bloom counts were not affected by treatment on any of three dates in either year. Lint yield at first harvest in Garlic Barrier-treated plots did not differ from yield in Temik-treated plots in either test. Lint yield from Temik-treated plots was significantly greater than from the untreated control. Total lint yield was significantly greater in Temik-treated plots only in 1995. Percent first harvest was not affected by treatment.