A lot of people have trouble with this game but I always found it quite easy...
Fling ALL the poo!Move from side to side, knocking down each banana bunch as you go under them. When you eat them, immediately knock them down again.
I generally like having a few spare bananas on the floor, that way I don't have to wait for the nanners to slowly fall to the ground when I'm out of poopy and there's a spider coming down that's definitely gonna kill that monkey.
As a side note, try not to underestimate the distance the spiders can crawl. If you take a look at the video, 50 seconds in there's a spider on the far left side and hot damn look how far it crawls. So if you think one is going you trap you in a corner, try to kill it ASAP.
Uh... that's it really. Or that's as much as I can attempt to explain. Good luck
and welcome to the site btw.