You miss the forest from the trees. The essential question is are all Hindus "clean" as you say? Is that the criterion to thus prevent entry? Most of the people who go into the temple do go in after proper ablutions, but recently, I was told that one could smell alcohol in the breath of Police personnel who were on civil dress and assigned to the temple duty. Best is to allow entry to everyone and perform cleansing rituals on ALL days :)
