We use Hefty garbage bags tied up onto the downspout. Used one time and then thrown out. They smell really bad after even only one use. They could be reused though.
These bags aren't thick,..but they seem tough,..maybe because they stretch?,..used them for years without issue,..but I will say,..they look like they could explode any second sometimes,Ha,Ha,..filled about half way and then change.
*Along with not using excesive product,..this is where a good spray technique is really beneficial.
Jeff