Do you put powder detergent in dispenser in front loader?
I put the powder in the detergent dispenser in my front loader, and it never clumps or clogs up. But I never wash in cold water - don't think it makes sense. Two different repairmen told me liquids gum up the works in washing machines, and to stick with powders. This has worked very well for me since 1998, when we bought this house.