Notarizing the Affidavit of Notice? (Eviction)

[JJ Mayer]

Hey all,

We're going through our first eviction (in downstate Illinois), and I wanted to get advice on the following...

We're about to post our 10-day Notice to Quit (eviction notice), and I saw advice that we should get an "affidavit of notice" notarized to "prove" to the courts (in the event it is needed) that we properly gave notice to the tenant.

How does this work?  Do other landlords get an affidavit notarized when evicting tenants?  I assume the notary is not present when we actually serve the notice, so they are just notarizing that I signed the affidavit, right?

Thanks for any advice you can offer or experience you can share!