Having sporadically used Neti Pots to try and help rhinitis/catarrh I've been delighted by my local pharmacist's recommendation of this particular version.
Incredibly easy and efficient to use (no more contortions over the sink twisting the head and the neti at the correct angle to produce the desired directon of flow) this is a brilliant piece of design - a soft plastic bottle, a large cap with a hole which the nostril fits OVER (more hygienic and less chance of injury/infection than versions inserted INTO the nostril) and a hollow tube from the cap (like in a perfume bottle). You squeeze the bottle to douche the nose at a pressure of your own best comfort.
I've been using this regularly for about a month have noticed a real difference in sinus/catarrh problems - much improved.
The only cavil I do have is - don't get seduced by the terrifying hype that you MUST only use their rinse product. You really can DIY, much more cheaply. I've checked out various yoga sites, carefully read the % ingredient instructions on a rival make, and checked this out with my ENT consultant.
As long as you carefully read the pack of salt (even some of the better rock or sea salts have added anticaking agents) to make sure the contents are ONLY salt and make sure you use bicarbonate of soda (NOT baking powder which has bicarb and other ingredients), then you can mix 3 parts salt to 1 part bicarb. I make a little pot up - 3 tsps salt to one tsp bicarb, shake this all together to mix well, then for each full bottle of boiled water cooled to lukewarm, use 1/2 tsp of your mixture.
Clear noses to you all!