Why invest in expensive electrical air purifiers when you could purchase a few types of houseplants to clean and filter the air naturally and inexpensively?

http://www.sustainablebabysteps.com/types-of-houseplants.html

(E) Why invest in expensive electrical air purifiers when you could purchase a few types of houseplants to clean and filter the air naturally and inexpensively? http://www.sustainablebabysteps.com/types-of-houseplants.html