Probiotic 'pills' are essential, they come in pills form or in the form of plain yogurt, plain kefir, 3lac and so on, they are the bacteria that normally colonize your bowels and they compete with candida.
YOu can take colonics
as well (but this would be a lot more expensive). Or use your probiotics in an enema 1/2 a teaspoon of any probiotic you use orally will do(cheaper than colonics). These methods have the advantage that you do not get some of it killed by the bile in the stomach. HOwever swallowing it is much more easier to achieve on a regular basis and you want intake on a regular basis.