Table 1. Variable list: Definition of variables used in the analyses.

General category and variable name		Definition
Hanging status (observed)
	Hanging correctly	50% or more of the ITCs in the house were hanging fully extended—either above or touching the ground.–at the time of our observation visit
	Tied up	50% or more of the ITCs in the house were hanging in place but tied up when our team came to observe, and reported to be tied up any amount of time throughout a day. The median number of hours these were reported tied up was 12 hours, with the range being 1 to 24 hours. The main reason for being tied up was that in some locations there was heavy transit or it was inconvenient to keep them fully extended all day (e.g., in a doorway).
	Being washed	Observed to be in the wash or hanging to dry.
	Stored	Observed to be present in the house, but not hanging nor in the laundry (e.g., stored in a cabinet or closet).
	Other location	Being used in a different way than originally placed (e.g., as a mosquito net, closet door, tablecloth).
	Missing	Missing from the house.
Condition status (observed)
	Excellent	Looks new, not dirty, and not torn.
	Good	Well conserved, clean, and any tears had been mended. Clearly used, but in good shape.
	Poor	Dirty, ripped, and broken. Clearly used, but no apparent effort to keep the ITC in good condition.
	Missing ITC	Missing from the house.
Upkeep status (self-reported)
	Washed correctly	Washed only in water and/or with mild soaps and dried in the shade.
	Washed incorrectly	Dried in the sun or washed with bleach or detergent.
	Not washed	Not washed at all.
	Mended	ITC got a tear or rip somewhere which respondent repaired. This was verified by observation by our team.
	Missing ITC	Missing from the house.
Knowledge of dengue
	Knows three or more correct symptoms of dengue	Respondents were able to name at least 3 typical symptoms in dengue patients (i.e., fever, headache, body ache, chills, nausea, vomiting, joint pain, or hemorrhage).
	Knows at least one correct treatment	Respondents knew of at least one correct treatment for dengue symptom relief (i.e., take acetaminophen, visit a health center, or drink plenty of liquids).
	Knows three or more correct protection methods	Respondents were able to name at least 3 appropriate household practices that could prevent dengue (prevent mosquito bites, use products against mosquitoes at home, use repellent, clean the house, spray/fumigate the house, dispose of useless containers, or put lids on water containers).
Perception of risk for dengue
	Knows a relative or close friend who has had dengue	Respondents know a relative or close friend who has had dengue in the past.
Mosquito bite prevention practices
	Children sleep under a mosquito net	Respondents’ children, of any age, sleep under a mosquito net.
Perceived effectiveness
	Saw a change in the amount of mosquitoes in the home	Respondents were asked if there was a change in the amount of mosquitoes in the home since the ITCs were hung. The responses were collapsed into “yes/only for a few months” vs. “no”.
	Would recommend ITCs	Respondents were asked if they would recommend the ITCs to family or friends.