Grass, wood, and straw become pure by being sprinkled (with water), a house by sweeping and smearing (it with cowdung or whitewash), an earthen (vessel) by a second burning.
संमार्जनौपाञ्जनेन सेकेनौल्लेखनेन च । गवां च परिवासेन भूमिः शुध्यति पञ्चभिः ॥ १२४ ॥
Land is purified by (the following) five (modes, viz.) by sweeping, by smearing (it with cowdung), by sprinkling (it with cows’urine or milk), by scraping, and by cows staying (on it during a day and night).
(Food) which has been pecked at by birds, smelt at by cows, touched (with the foot), sneezed on, or defiled by hair or insects, becomes pure by scattering earth (over it).