wet mouth sounds

I don't know if this fis into de-essing for sibilance sounds. But it's like you can hear saliva when my mouth opens right before I sing.
 
However, it only seems apparent when I'm compressing. So can anyone lead me to general tips when compressing vocals?

Or separate your teeth before you open your lips and breath in at the same time.

With a good mic in a quiet room, you will hear the sounds your lips make as they open to sing...and every other sound coming from your mouth as well.

Use envelopes, use cut/cut/delete, and whatever else you need to to rid your track of those noises. 

I don't worry too much about them unless I can hear them clearly...usually at the beginnings of words and phrases. And that will also depend on what the music is doing too. If you have some energetic music happening, chances are good the noises are going to be covered in the music. It's only when you are soloing the track that you will hear this stuff..... it never hurts to remove it.

Take care of it at the source. Drink a lot of water, get hydrated.  No dairy products. Don't eat or drink anything that makes you go hrrrkkkk to clear your throat.  Caffeine and alcohol tend to dry you out, avoid them.

The important thing is to be really well hydrated so your mouth and throat's mucous membranes are able to slide and slap around without those clicky sounds.

Probably the simplest and most effective thing I've seen....

CHAPSTICK!

...and all of the things that tarsier mentioned. Once you've got those covered off, you can adjust any gain/compression settings.

Good luck...
Jay

Use a gate before the comp.

The problem with that is that most of the mouth clicky noises happen when your mouth/vocal tract is moving to a different sound within a word. A gate isn't going to take care of that. Some, but not all.

I've had to deal with a lot of this, and by far the easiest solution to get rid of those sounds after recording is to use the "Heal" tool in Adobe Audition's spectral editing view. iZotope RX also has this, and I'm pretty sure other sound editors do too.  I wouldn't even consider trying to edit them out in Sonar.  Well, no I take that back. I'd consider it, maybe even start to attempt it, but then give up in frustration and go back to Audition.

As a side note or trivia item, you can hear the kind of mouth sounds on Glass Onion right before the first line of the song.