I've heard of the Neti Pot but never actually used it...it is traditionally successful in Ayurveda and others...try doing a Search on this...
Again I still recommend the Mahasudarshan as well. You can begin with one dosage as Supplement to whatever else you are doing. Better with meals...De-Toxification is the key. If the liver is congested and the lymphatic system is congested you can expect the kidneys to be overworked as well and the digestive system to suffer as well...