Risk of bias component	Low	Unclear	High
Recruitment bias	No participants recruited after clusters randomized	No or unclear information reported Recruitment bias not applicable to trial design as it is related to human participants	Paricipants recruited to trial after clusters randomized
Mosquito group comparability	Mosquito populations comparable	No or unclear information reported	Mosquito populations comparable
Collectors blinded	Outcomes assessed blinded	No or unclear information reported Outcomes assessed not blinded, but this is unlikely to influence the results	Outcomes assessed not blinded, and this is likely to influence the results
Household blinded	Outcomes assessed blinded	No or unclear information reported If outcomes assessed were not blinded, but this is unlikely to influence the results, we will judge this to be low risk.	Outcomes assessed not blinded, and this is likely to influence the results If outcomes assessed were not blinded, but this is unlikely to influence the results, we will judge this to be low risk.
Treatment allocation	Treatments randomized	No or unclear information reported	Treatments not randomized
Allocation concealment	Allocation concealment procedures were adhered to.	No or unclear information reported Allocation concealment procedures where not adhered to, however this is unlikely to affect the results.	Allocation procedures were not adhered to and this is likely to have affected the results.
Incomplete outcome data addressed	No or low missing data, reason for missing data is unlikely to be related to the true outcome	No or unclear information reported	High missing data, reason for missing data is likely to be related to the true outcome
Raw data reported	Raw data reported	No or unclear information reported	Raw data not reported
Clusters lost to follow‐up	No complete clusters lost from trial	No or unclear information as to whether clusters were lost from trial	At least one cluster lost from trial
Selective reporting	No selective reporting, all measured outcomes reported in results	No or unclear information on whether all measured outcomes were reported in results	Selective reporting; not all measured outcomes were reported in results
Correct statistical methods; adjusted for clustering	Clustering was taken into account and statistical methods adjusted for clustering	No or unclear information as to whether clustering was taken into account for statistical methods.	Trial did not take clustering into account for statistical methods
Conflicting interests	No conflict of interest is stated	No or unclear information reported	Conflict of interest stated