Their advice- Make less trash, use less bags, and talk to your city and waste disposal company and see what they have to say on the subject.
I was using a lot of little bags because I had piles of them and wanted to get rid of them, but it should be easy going back to dumping little cans into one big bag (preferably recycled plastic). It helps to only have one garbage where you throw away anything wet or food related, other garbage cans don't really need liners. And don't forget to compost! (I will write a post on it one of these days!)