Make sure you choose the right program and add the amount of detergent to get the best wash. Be careful not to put too much in your Indesit washing machine. If you do, the machine won't be able to dissolve the detergent as well, and the clothes won't come out clean. Try rewashing the clothes on the right setting, using enough detergent. Ensure that heavily soiled items aren't being washed with the quick wash option. You may also find that items with a lot of dirt need a pre-wash cycle before the main wash to get the best results.