Both the Hygieneglaze 2.0 and Wondergliss help waste pass easier through the toilet. However, the main difference is that the Hygieneglaze 2.0 actually helps neutralize bacteria on the toilet. The glaze is actually baked into the ceramic, and extends from the interior rim of the bowl. Duravit boasts that after six hours, 90% of the bacteria is killed. After 24 hours, 99.999% of the bacteria is eliminated.