go to the web site and click on the purple button, it doesn't cost you anything but your time. Corporate sponsores monitor the website and if it does not get enough hits every day, the animal shelters loose food donations.
I use to do this every day and then just stopped for some reason. Thank you for reminding me how important this is. Being in the rescue world I guess I just got tied up in the things that are hard to do not the things that are as easy as this.