Jet:

Irrigating with a water pik without the Grossan tip probably will not work
well.  It will work better once you have the Grossan tip, or use a neti pot.
When you get this working properly, the water should gently flow up one
nostrile, and out the other.  There is some controversy about whether or not
the fluid actually flushes the sinuses, or if it just runs up one side of
your nose and out the other.  Personally, I think the water just runs in one
side and out the other.  But, that seems to be enough.  In this case, a
picture is worth a thousand words.  I am not using this website for any
reason other than to show the picture of what should happen, whether you use
the Grossan system or a neti pot, or other device.  What is pictured in this
photo is a neti pot.  (If you decide to buy a neti pot, the plastic ones
have a really strong plastic odor to them, which might be irritating to you.
This can be seasoned out by boiling them a few times, and alternating a day
long soak in water and baking soda.  Eventually they stop smelling.
Otherwise use a ceramic or metal version.  The Grossan system has no odor,
but is more difficult to travel with.

http://www.nutraceutic.com/Products/Ayurveda/AncientSecrets/ancientsecretsne
tipot.htm

I run about 250 ml through each nostrile, with no inhale or exhaling through
the nose.  I breath normally through my mouth during the process.  After
each nostrile is "rinsed", I gently blow my nose, and what comes out comes
out.  It's not always that a lot of mucus is expelled.  The key thing is to
bathe the ostium (sinus openings), rinse away allergens, and to rinse away
any mucus that is in the way.

The mixture I use is 1000 ml bottled water, 1 1/2 tsp granulated non-iodized
table salt, 1/4 tsp baking soda, mixed well, just before use.  During the
winter I warm the water to the touch just because it's too cold otherwise.
Too hot is a bad thing, and too cold bothers me.  There are a lot of
mixtures that other people use, with all types of ingredients that I'm not
so sure are a good idea.

The whole process should be very gentle.  Never force the liquid into your
nose, and only blow gently.

Also, be sure to discuss this and any other treatment of any kind with your
ENT or Allergist.  I've found that most have at least heard of this process,
and it's best to review it with them to make sure that there are no special
risks to you and your particular situation.

Helpfull?

-O