Bests & Worsts Reviews from Amazon

I buy this stuff all the time to make my acrylic paints flow, but I normally get it at a local giant hardware chain. I shake it and strain it because I've been told, but have never seen what artists call "Floeggers" or Floetrol Boogers. To save time and effort I ordered from Amazon and WOW! This stuff was loaded with weird orange chunks of congealed chemical snot and in one bottle I poured out a baby-fist sized clot of mucus, or something equally gross. So I'm not quite sure what to think. Is this really Floetrol or is it a cheap fake Floetrol? Or was it stored inappropriately? Or has it simply been Floetrol too long? And yes, I did shake it long and hard. Yikes! I think I'll make a trip to the giant orange store next time.