There are some fish foods and some fruit such as bananas that are great to have underwater. Dog food usually creates a foggy mess because the moment you open the zippie bag or whatever you carry it in, it starts becoming a soggy mess that floats in the water.
If you are referring to regret related to regretting attracting the wrong swarm of fish, no, not in my experience; however, I've always been with a group that was familiar with they types of fish we were trying to attract and planned accordingly.