you say it doesn't open...silly question (sorta like do you have gas in the tank)
but how can you tell ?
maybe the tank is empty already ?
reason I ask, is my wife did that to me - dumped grey and didn't tell me - I looked at it for a while until she asked what I was doing ?!?! DOOH !
Now sweetie - how am I supposed to rinse out the black stinky slinky I just dumped ? Thanks for helping darling