I prefer to burn the sigil after my wish is fulfilled. But there are different opinions on this. Read all the opinions and then stay with the one you feel is right
In my opinion it depends on the energy it gives you. If you’re close to that energy there is no need to burn them.
Let’s take Lucifers Sigil. I use it in every evocation. It’s always in my temple.
I have burned Sigils I don’t use anymore. But for you burn it make a little closing ritual:
‘I’m closing this Sigil, thus I declare this Sigil void’. Then burn burry or throw it in water.
I would close it (declare it void) before ending. So you not offend.
In my opinion it isn’t necessary, mostly close the ritual like: ‘you may leave in peace’
And use proper banishing if you think it’s needed.
What if it gives you a heavy energy and my house feels haunted. In my case I just evoke King Belial yesterday . Today I feel my house is cold and heavy. It feels there’s walking everywhere my house. My son felt it and got scared. My workings with King Belial is not done yet but is it alright to close the sigil now ? Would it be proper if I dispose it on the sink while water is on and down the drain?
Spirit seals are traditionally disposed of through the elements. A paper seal can be burned, and the ashes cast upon the wind, or into a river, or buried in the earth. Modern Flushing can be a stand in for using a river, as it is still flowing water.
Some people, who take a more religious view of demons, claim using a ritual such as the LBRP offends them, but in my personal experience that is simply not true.