Food Spillage - Keep Or Discard?

Clumsily, I dropped the fish food plastic tub on the floor this morning. I have a vast array of dried foods mixed in it, and only about 10% stayed in the pot, 25% landed on the bottom shelf of the fish cupboard, and the remaining 65% landed on the laminate flooring. I used some paper to push what landed onto the bottom shelf into a separate container, and the same with what landed on the floor into a separate container ie I didn't use the dustpan and brush. The corner where it fell gets mopped once a week on Fridays. The only time feet end up near that area is when sitting on the adjacent chair to observe or feed the fish - only me, several times per day ( sometimes in socks, sometimes in indoor-only shoes, occasionally in outdoor shoes ), but it's altogether possible that outdoor shoes have made no contact with that particular area since last Friday's mopping.

I hate wastage. What would you do, if you were in my position?
(a) discard both what landed on the bottom shelf and the floor;
(b) keep both;
(c) discard what landed on the floor but keep what landed on the bottom shelf.

Thanks, Sue - very helpful. [It's a mix of flakes, pellets, crisps and bites.]

I’d feel absolutely no fear in using the 35% that didn’t go on the floor.  I think I would also feel quite comfortable using what was on the floor too given where it landed. I would probably crack on and forget it even happened!! I’ve used fish food spilled on the floor where only socks visit numerous times before and scooped it up and forgotten about it.