>Based on the error message only this class doesn't implement IDisposable interface which means you can not wrap it into using statement.

So, not all object can be used as is. That is what I was trying to realize in the last few minutes. I have this specific class, that when being used in a loop, after a few days, it increases in the memory. That is the only one doing it. So, I thought I would start by adjusting the code with Using syntax where it applies. I guess the fault situation is not there.