When should samples of control areas be made during the evaluation of insecticides?

Samples of control areas should be taken to allow for the determination of any treatment effect. This practice is crucial for evaluating the effectiveness of insecticides in mosquito control programs. By sampling control areas, you can establish a baseline of mosquito population data against which the treated areas can be compared. This comparative analysis helps to accurately assess whether the treatment has resulted in a significant reduction in mosquito populations.

It's also important that sampling occurs consistently so that the data collected can provide reliable insights into the efficacy of the insecticides used. Without this step, it would be challenging to draw valid conclusions or make informed decisions about pest control measures.