scour out of
scour (something) out of (something else)
To remove something out of something else with vigorous scrubbing, especially by using a very abrasive brush or cleaning pad. I spent nearly an hour trying to scour the dried paint out of the cups, but I just couldn't get it all out. Take this wire brush and scour the rust out of the rims of the wheels.
scour something out of something
to clean something out of something by scouring. Did you scour the rust out of the pan? Please scour the burned material out of the bowl.