It takes time for disavowed links to disappear: possibly several weeks or even months.
Many of my client said even after the unnatural links are removed they saw the links in the webmaster tool. I am not able to get this point, even after disavowing, how it is possible, can anyone also experience the same as me.
Neither. Comments are for your benefit. They might be useful to you when you are reviewing the list. But Google doesn't look at them, and they have no effect on the disavowel process.
Someone suggested me to put comments or reason along with the link, to which i want to disavow. Is this necessary to do this, is there any effect to it, or it is just a formality?