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Table 1 The percentage residual insecticide per net brand, after repeated washing and drying using four different drying regiments

From: Wash durability and optimal drying regimen of four brands of long-lasting insecticide-treated nets after repeated washing under tropical conditions

Net type Drying regimen Number of washes
   W = 0 W = 5 W = 10 W = 15 W = 20
Olyset Sun/hang 100* 92 84 81.7 70.8
  Sun/Ground 100* 91 83.3 79 73.3
  Shade/Ground 100* 95.1 91 81 77.1
  Shade/Hang 100* 96 94 86 80.7
PerManet Sun/hang 100* 54.6 31.8 29.6 27.5
  Sun/Ground 100* 51.1 29.5 25.5 23.6
  Shade/Ground 100* 34.5 27.3 21.8 18.2
  Shade/Hang 100* 43.8 41.5 30.2 27.5
BASF Sun/hang 100* 60 47.9 43.5 42
  Sun/Ground 100* 49.8 47.9 41.8 40.5
  Shade/Ground 100* 57 50.5 44 41.2
  Shade/Hang 100* 80 60 56 54.5
TNT Sun/hang 100* 69.3 53.9 52.9 46.5
  Sun/Ground 100* 55.1 40 39.1 34.5
  Shade/Ground 100* 56.6 50.8 46.2 40.3
  Shade/Hang 100* 58.5 54 47.4 44.8
Conventional Sun/hang 100* 43.6 32 16 7.2
  Sun/Ground 100* 28 13.6 7,6 4
  Shade/Ground 100* 34 24.4 11.6 5.2
  Shade/Hang 100* 48 34 12.4 6
  1. Residual insecticide concentration per net brand after repeated washing * The initial insecticide concentrations were as follows: Olyset net, 1000 mg/m², Permanet 55 mg/m², BASF 200 mg/m², TNT 65 mg/m² and Conventional 25 mg/m.