Table 3.

Cumulative mortality (%) for Dermanyssus gallinae after 24 and 48 h of exposure to each of four silica-based acaricides under laboratory conditions

Exposure time (h)	Control	Fossil Shield 90 white	Fossil Shield Instant White	Silicosec	Ewazid
24	3.85a	92.3c	100c	36.5b	31.0b
48	4.80a	100b	100b	100b	100b

Different letters following means within a row indicate significant differences among products (Tukey’s HSD: p < 0.05)