Warning, there is a right way and a wrong way to do this. Make sure you know what your doing before you start.
I have used sinus irrigation and it does work.. I used sea salt disolved in warm water.
you need
distilled water sea salt
liquid chlorophyll and colloidal silver from the health food store.
in a glass mix 1/4 cup water with a pinch of salt and heat to body temperature.
add 5 drops each silver and chlorophyll and mix.
using a large dropper (like one used for infant medication) drop 2 full droppersfull into one side of the nose while laying down.
Turn the head and let it drain out the other nostril. Be sure to have paper towels handy.
The silver kills the bacteria and there are several hundred kind that can live in the sinus cavities and anti biotics don't get rid of them all.
Do this twice a day for a week, mixing up the mixture fresh each time.
Then do it once a week for maintenance.
There is nothing in this that will hurt you, and it cured me.
I do not have to take claritin, or antibiotics anymore.
best wishes
I recommend that you consult your doctor or medical professional when deciding whether to use antibiotics for any purpose such as dealing with a sinus infection.