Rats from Ducktales

Scrooge, Huey, Dewey, Louie and Webby 

were scared of Rats in the Sewer when they were shrunk by 

the enlarging Machine used by the Microducks 

in Ducktales Episode called "Micro Ducks from Outer Space". 

All Scrooge has to do, 

is to light a Match and set the Box of Matches on Fire 

on the Water that scares the 2 scary Rats away.