Table 1. Horizontal transfer of diatomaceous earth, DE 51 in C. lectularius adults through a single exposed bed bug.
| LC50 * (95% C.I) | ||
| Time (h) | ||
| DE 51 | dye + DE 51 | |
| 48 | >20.0 | − |
| 72 | 13.9 (9.5–30.2) | − |
| 96 | 13.0 (7.5–43.9) | − |
| 120 | 8.7 (4.6–12.1) | − |
| 144 | 6.4 (2.8–8.7) | >20.0 |
| 216 | 5.1 (1.7–7.3) | 17.6 (11.1–5134.2) |
*
LC50 values (concentration causing 50% mortality; in mg) were calculated based on 4 concentrations (5–20 mg) for each sample when an exposed bed bug was placed with 5 unexposed adult bed bugs.
− not calculated due to low mortality
There were 5 replicates of 6 bugs each. Exposed bed bug was excluded from the data (N = 25)
LC50 values for the dye were not calculated due to low mortality; there was no mortality in the control group.