A dish rack should be cleaned regularly because it touches wet plates, bowls, cups, cutlery, and cookware every day. Water, food residue, soap film, hard-water minerals, and dust can build up on the rack surface if it is only rinsed casually.
A dish rack is one of those kitchen items people use every day but rarely think about until it starts to look dirty. Water spots, soap residue, food particles, and even light rust marks can build up over time. That is when people start asking how to clean a dish rack properly and how to keep it looking clean without too much effort.