I do this from time to time because of sinus issues, but have never seen any of these gadgets. I use a 60cc syringe with a tapered tip (not used w/needles) and fill it with warm water, non-iodized salt and baking soda. I have several of the syringes and alternate them, washing them with very hot water and soap and turning upright to dry thoroughly on paper towels.

I don't now where to tell you to get them, but I got mine free from a Podiatrist. Vet possibly? I don't recall what their purpose is in the medical field.

If you try these, get the syringes that do not have the rubber-tipped barrel. There is a syringe that has a compressed rubber/plastic tipped barrel. The wide black tip on the others catches water and holds it. You can take it apart, so that it will dry, but the rubber will not last long.

Cathie