Ascaris are parasites that dump alot of toxins into your body. They also mess up your hormones and immune system. You have to kill them first then rebuild because you wont make any progress with them living in you, laying eggs and damaging your organs. The bigger they get the harder they are to kill. It is best to combine meds and take them for long rounds. It was my experience that they loved dairy products, got stronger with b vitamins and were hard to kill and caused alot of commotion in my intestines when they died. They live in your small intestines so they cause alot of discomfort and can cause blockages. They do not like hot foods like hot sauce, garlic or cinnamon. These weaken them. worm wood also weakens them because it burns their tegument. You can get them from gardening or eating veggies that were not washed well. As long as everyone is hand washing in your house and not sharing cups, etc they should be ok. The itching can be from scattering but it can also be from toxins built up in your body.