That looks like "normal" eye boogers - nice and clear. If they turn green, you might want to think about a vet visit, that might (might) be something worse than just dust irritation. (I'm thinking bacterial infection versus worms, though.)
We've had a LOT of smoke in the are from wildfires here, so lots of eye boogers keeping the ash washed out.
If they bother you - you can get some human tear-replacement eye-drops - JUST saline (no "get the red out" junk) - and flush his eyes every morning, or as needed. If it's an irritation causing the boogers, that can help.
Denna STILL eats poop... so... yeah, it'd be nice to not have to worry about that! I've noticed it depends on what she's had to eat... so I know what days I have to clean up after her ASAP. Luckily (?) it's only her OWN poop that she finds delectable.