Bad advice, drilled in the wall, but not plugged t...

Bad advice, drilled in the wall, but not plugged the holes.
Has indicated that the wall is already partly full of insulation and that no other insulation can be injected. No guarantee can then be given.
But the next time you drill in the right place, you can also see that the wall is not full.
If too few square meters can be made, it is apparently no longer interesting.
Unfortunately