I use both Astepro and generic Flonase at bedtime. The Flonase is often good for my clogged sinuses. More recently it has only been working until about 2 or 3 am. I recently bought one of those Navage things. For the past two or three weeks I have been clearing out the sinuses with the Navage, then spaying with Flonase. With the Navage I noticed a yellowish mucus after using it. Just within the past two or three days, I am noticing no more yellowish mucus and staying relative sinuses free of congestion.