Cleansing yourself can be simple as a bath with essential oil, flower essence, fragrance oil, gem water or salt added. Sometimes, people prefer showers using soap infused with botanical material. You can fast, mast commonly on water and apple cider for a day.
There are meditations and visualizations you can do to cleanse your mind. You can use incense or salt water in an asperger to cleanse an area.
Tools can be left in the sun, under the moon, in a black cloth, held over incense, flame, or under water, buried in salt or earth, and even whispered over.