A Terms and Conditions is not required and it’s not mandatory by law. Unlike Privacy Policies, there’s no law or regulation on Terms and Conditions. The Cleaning Product Right to Know Act makes California the first state to require ingredient labeling both on product labels and online for cleaning products. Unlike retail packaged food, no federal requirements exist for disclosing ingredients on cleaning products. Green cleaning refers to using cleaning methods and products with environmentally friendly ingredients and procedures which are designed to preserve human health and environmental quality. Green cleaning techniques and products avoid the use of products which contain toxic chemicals, some of which emit volatile organic compounds causing respiratory, dermatological and other conditions. Green cleaning can also describe the way residential and industrial cleaning products are manufactured, packaged and distributed. If the manufacturing process is environmentally friendly and the products are biodegradable, then the term "green" or "eco-friendly" may apply. A session cookie, on the other hand, will expire at the end of the user session, when the web browser is closed. Since this is a personal agreement between you and your roommates, you can include anything you want. This portion of the Roommate Contract helps ensure everyone gets along and the residence is properly maintained.