Best supplies to help with their cleaner indoor air goals

Hello! What are the "best" supplies to provide to families to help with their cleaner indoor air goals and lessening asthma symptoms?  My organization has a grant to offer supplies in a range from $40-$200 per person. Thank you for your help! 

IPM

Can you send us results of your IPM efforts as a contributor to reducing asthma? I work with low income families in mult-unit housing where it's very difficult to enforce landlord participation in the process. I piloted an IPM project and reduced asthma triggers but did not study affect on  asthma.   

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