Is it permissible to pray in clothes that have bed bug entrails or bloodstains on them, despite washing them many times, as these stains have not been removed?

It is recommended to dust the bedding and say "Bismillah" before sleeping, due to what has been established in the Prophetic Sunnah. This is to ward off harmful insects like bed bugs. The blood of this insect is not considered impure, does not invalidate ablution (wudu), and does not necessitate washing clothes stained by it according to Sharia. However, it is preferable to remove it for cleanliness.