That reminds me of the time that me and my two roommates decided to actually clean the entire apartment. One guy got the kitchen, the other the living room, I got the bathroom.
It wasn't that bad until I got to the shower doors. It was a typical shower-tub combo with sliding doors. The track they ran on was filled with this jelly like goop. Like a combo of soap residue, mildew, and yeti snot.
I had to figure out a way to scoop it all out.
I took a tea spoon and then used a bowling ball (didn't have a hammer) 
to 'fold' the spoon until it was narrow enough to use to scoop out the track. I almost puked.