Keep it clean and green.
Use cleaning products without toxic chemicals. It recommends calling companies to ask for full ingredients lists and to check online at ewg.org and epa.gov
Avoid products with vague terms such as preservatives and surfactants and choose certified green products where possible (which can be found on greenseal.org and environmentalchoice.com)
Go through your cupboards and throw away anything that isn't green (this is presuming you can easily afford to replace everything!).
Try using homemade cleaning products instead.