Holy water is often used to cleanse objects and spaces.
What follows is my recipe for making it. This is based on a classical method I learned years ago in an esoteric group – so long ago that I cannot remember which group.
What is most important is the basic structure. Feel free to adapt it in the way that best suits you.
Half a glass of water
Half a teaspoon of salt.
Their source does not matter, but you may prefer to use ones that come from wells and springs or are natural/organic.
In whatever way works best for you, centre yourself and connect fully with Spirit/Tao/God/dess whatever you call the benevolent flow of the universe.
Allow that connection to come fully through you so that it radiates through your hands.
Place the palm of your hand (right hand if right-handed, left if left-handed) over the water and sense the benevolent energy flowing into every atom and molecule of the water.
With slow and calm intention, think or say the following words:
Hello, creature of water. In the name of All That is Benevolent and Good, I bless you. I cleanse you. I exorcise you of all elements of evil and negativity, so that wherever you are scattered all elements of evil and negativity may depart.
As you say these words, you can increase the potency by drawing a symbol in the water using the energy from your palm. If you are Christian, you might use the cross; if Jewish, the Star of David; if Hindu, the OM; if pagan, the equal-armed across; and so on. It is customary to draw it three times.
Do the same – all of 3 above – with the salt. The only difference is that you address it as ‘creature of salt.’
Then drop some of the salt into the water. Again it is customary to do this three times. And if you wish, you can drop it into the water at the same time following the pattern of the symbol – eg the cross – that you were using before.
Then scatter the salt wherever you want to do the cleansing. Children love to do this.
In my opinion, the major potency of the blessed water lasts a few hours.
Afterwards whatever is left you can simply pour into the earth somewhere.