There are so many seals and certifications related to "green" and environmental attributes of products and services that many such marks risk losing their effectiveness, according to 2009 Conscious Consumer Report from BBMG.
In fact, there are more than 400 such seals and certifications, BBMG found.
In general, consumers tend to trust government-approved and generic seals more than others.
Here is a look at consumers' familiarity with various certifications.
Secondly, here's a look at the impact on purchasing decisions from consumers' viewing various seals.