Table 2. Horizontal transfer of diatomaceous earth, DE 51 to nymphs through exposed adult bed bugs.

		LC50 * (95% C.I)
Treatments	Stage
		24 h	48 h
dye	nymph	–	–
	adult	–	–
DE 51	nymph	8.1 (5.7–10.3)	+
	adult	6.4 (2.9–8.7)	+
dye+DE 51	nymph	19.9 (15.0–46.1)	8.9 (7.1–10.6)
	adult	–	11.8 (8.9–15.5)

^*LC₅₀ values (concentration causing 50% mortality; in mg) were calculated based on 4 concentrations (5–20 mg) for each sample when four exposed adult bed bugs were placed with six unexposed nymphs (1^st–2^nd instar)

− not calculated due to low mortality

+ not calculated due to high mortality

There were 4 replicates of 10 bugs each. Mortality is based on a total of 24 nymphs and 16 adult bed bugs.