What changes the food answer
Use small fresh-food servings and remove wet leftovers before they sour, dry out, or attract debris.
Control the bowl
Use a clean dish for fresh foods, separate it from dry staples, and wash it after use instead of letting residue build up.
Control the room
Heat, sun through glass, humidity, and food sitting under perches all make spoilage and contamination more likely.
Prep simply
Wash produce, avoid mushy mixes that stick everywhere, and do not serve anything moldy, fermented, seasoned, or leftover from a risky human meal.
Practical routine
Offer fresh food during a supervised window, then remove it and wash the dish.