Table 1 Study design (top) and number of apartments included in resistance intervention strategies (bottom) tested in parallel at two housing sites in Danville, IL and Indianapolis, IN. Abbreviations are as follow: Ab, Abamectin (bait; Vendetta); Ba, Boric acid (bait; Magnetic); T + λ, Thiamethoxam + λ-cyhalothrin (spray; Tandem); Ab + P, Abamectin + Pyriproxyfen (bait; Vendetta Plus); C, Collect live cockroaches for lab colony rearing and future resistance assessment (RA). Density categories are based on initial month-0 population assessments from average trap catches (ATC): (i) ATC >0 to <6, (ii) ATC > 6 and (iii) adjacent apartments with starting ATC = 0.

From: Rapid evolutionary responses to insecticide resistance management interventions by the German cockroach (Blattella germanica L.)

Months post-treatment Resistance management treatments
Single AI Rotation Mixture
0 May Ab Ab T + λ
1 June Ab Ba T + λ
2 July Ab T + λ T + λ
3 August Ab Ab T + λ
4 September Ab Ba C + (Ab + P)
5 October Ab T + λ Ab + P
6 November C C No action
Density category Number of apartments per treatment
Indianapolis, IN i 5 4 5
ii
iii 9 15 14
Total 14 19 19
Danville, IL i 5 6 4
ii 4 4 7
iii 7 8 3
Total 16 18 14