Oxalic acid is widely used as a cleaning agent for removing rust and stains, particularly in metal cleaning and wood bleaching applications. It is effective in descaling boilers and radiators due to its ability to dissolve mineral deposits. In the textile industry, it serves as a mordant in dyeing processes, helping to fix dyes to fabrics. Additionally, it is utilized in beekeeping to control varroa mites, a common pest in hives. Oxalic acid is also employed in the manufacture of pharmaceuticals and as a reagent in chemical synthesis. However, its use requires careful handling due to its corrosive nature.