If you want to use CS (your own solution) then you need a Grossan irrigator
tip for your water pik. Don't try it without the proper implement, which can be found here: http://prostores1.carrierzone.com/servlet/ethicare_com/Categories Make sure it will fit your model waterpik. ================================== I initially got a Grossan ATTACHMENT for my water pik. When the water pik broke, I bought the ENTIRE Grossan sinus irrigator. Having used both, I like the irrigator much better. It can be set so it emits a much more gentle spray, and it doesn't traumatize my sinuses. Nenah
