All information provided by and provided on this website is for informational purposes only and should not be construed as medical advice or instruction. No action or inaction should be taken based solely on the information provided. Plant research and testing has been conducted by NASA and/or plant scientist Bill Wolverton, as part of the Skylab Experiment, funded by the NASA Space Agency. Plants have been chosen based on data collected from NASA, as they are plants that have been proven to filter certain chemicals from indoor environments. The number of plants needed is one 6 inch plant per each 100 square feet of space. Anytime you have planted and watered soil, there is a chance mold spores can grow and insects may appear. You should always take extra precaution if purchasing for anyone whose health may be compromised or sensitive to grass, pollen or any plant byproducts. Green Your Air is not responsible for injury or misuse of this product. We encourage you to please always consult an appropriate health care professional on any matter related to health. Always keep plants out of reach of small children and family pets. Green Your Air acknowledges that the information provided is opinion and believed to be accurate, based on research obtained from http://www.sti.nasa.gov/tto/