I like that you can set up reminders for when it is time or not-time to pickup my trash cans as well! It also helps me keep better tabs of how much space in each bin so i don't have too many bins out at one point (which would be bad!).
Sometimes there are issues with having multiple people picking them off but other than this we haven’t had any problems using DD yet!!? We love being able manage our waste stream by setting appointments through their app instead just hauling everything over ourselves because its easier/more convenient sometimes then cleaning after work hours if they aren't open late enough during business hrs etc..