I recently purified my apartment and renewed my wards. Typically, when I purify and ward I smudge each room and closet with white ceremonial sage (purchased long before I became aware that this plant is endangered) or a blessed incense blend. Then I raise energy through toning, clapping, and/or singing to set the wards. I often project a warding rune toward each of the six directions (S, E, W, N, above, and below), but not always.
This time around as a part of my cleansing and warding process I employed a tincture that I crafted several months ago. The tincture contained the five herbs that I blessed at the time of the Super Moon for apotropaic workings. I added a three tablespoons of the tincture to approximately 27 ounces of distilled water. Using that magical mixture:
1) I sprayed the air vents in my apartment, and
2) I poured the remainder of the blessed liquid down every drain (including the toilets).
I had not really thought about it before but ducts and drains are access points, and they are not necessarily one-way when it comes to unwanted energies. For example, unwanted sounds and smells often waft through the ducts from neighboring apartments. Since completing this quick work, my apartment feels clearer and more balanced, in addition to simply being better protected. I also used the oil blend containing the same herbs to mark the windows and mirrors with a warding rune.
Purification and warding are two of the most basic magical workings. They are quite necessary for spirit workers and others who often move between worlds attracting various unwanted energies and also unwittingly dragging unwanted energies into other realms. To my thinking purification and warding are part and parcel of good magical hygiene practices and when done regularly they can make life easier. I hope you have an opportunity to try this or something similar, and feel free to let me know what your experience is like.