The tumbleweed lady made a fortune selling wild tumbleweeds that blow past her house -she calls her mail order site tumbleweed farms--- there must be something around my house that somebody would pay me for.
They are removing the leaf litter from the forest that enriches the soil provide nutrients for plant life and a haven for the tiny insects only to mail it somewhere else. This could also run the risk of spreading diseases to other trees. Does that make ecologic sense? I think not.