The tubes have a very small amount of mercury in them.
*Most* large companies were told several years ago to start disposing of them correctly or there will be regulations put in place.
We put them in a container, in a bag, in another container and Fed Ex ground them to a recycler.
I had a similar one right on a body line.
Made the whole door look like it ****.
My local Pop a Ding guy got it out.
I think I paid about $80.00.
He did my truck and a ding in my wife's car at the same time.
If the HVAC isn't running, it wont remove moisture.
When the sun goes down there is less heat load so the unit reaches setpoint and shuts down.
You can off set this somewhat by lowering your night time set point.
FYI, Humidity problems are often caused by oversized units.
How many sq ft?