Table 2.

Treatment information of the infested apartments.

Treatment	Mean Dust Usage Per Apartment (g) *	Mean Spray Usage Per Apartment (Liter) *	Mean (± SEM) Initial Treatment Time Per Apartment (Min) *	Median (Min, Max) Number of Re-Treatments before Bed Bugs Were Eliminated 2	Median (min, max) Number of Biweekly Visits Per Apartment before Bed Bugs were Eliminated 2
I	NA 1	NA	57 ± 8 a	0 (0–1)	1 (1–4)
II	6 ± 2a	1.0 ± 0.3 ab	87 ± 8 a	1 (0–11)	3 (1–10)
III	6 ± 1a	0.8 ± 0.2 a	97 ± 21 a	2 (0–8)	6 (1–9)
IV	10 ± 3a	1.9 ± 0.4 b	98 ± 22 a	6 (0–10)	7 (1–12)

¹ Not applicable; ² One apartment in each treatment was excluded from the analysis. They were either terminated early or elimination was not achieved or confirmed at the end of the study; * Means within the same column followed by the same letters are not significantly different (Tukey’s HSD test, p > 0.05).