Many times you can, there are great lower costs kibble out there. But my thinking is not necessarily the food itself, it's where the ingredients are sourced and the tests done on the kibble, as well as the recall history. That is why I choose to keep mine on the best food possible, especially since I know it agrees with them, I don't want to make any changes that could cause problems. There is no greater feeling than knowing they are doing well on what they are given. Many times I tried other low cost foods and it took a while to get them back ( tear stains, stomach upset or runny poo) after the trial so now I'm nervous to even try other six star foods because I don't want to fix what is not broken.