Figure 3. Horizontal transfer of DE 51 in C. lectularius through an exposed bug; one bed bug exposed to 20 mg of DE 51 or a mixture of DE 51 and the dye (10 mg each) or dye (20 mg) alone was placed with 5 unexposed bed bugs; LT₅₀ = time required to kill 50% of the bugs.

There was no mortality in the control group. There were 5 replicates of 6 bugs each. Exposed bed bug was excluded from the data; N = 25.