Well really very little. Both our cellulose fibers came from plants. Protein fibers to come from living organisms, but are a by product of that living organism. These fibers today dominate the carpet market, because of the ability to add or remove features, and the abundant supply. Basic carpet care is a must for the over all health of a carpet.
Carpets are filters.
Not just a decoration. All carpets require the same basic care. So removing it while it is dry is the most efficient method. The vacuums that you have should reflect the amount and type of traffic your carpet gets. Light traffic requires only minimal vacuuming with a good vacuum, normal traffic requires a through cleaning at least once a week with a good vacuum, and heavy traffic requires a through cleaning daily with a good vacuum.