My son have had sinus infection and allergies for awhile now. He's allergic to dust and so far. we could try some medicines and nasalsprays but not any of them effective.any Idea for hor home treatment for sinus? please help me to remove symptoms of sinus allergy?

I've dealt with allergies all my life. The prescription medications don't really work well, and why risk the side effects? In fact, many of the steroid sprays reduce your immunity so that it's easier to get an infection. my approach is to avoid excess dust (and for me – pollen) and, when I can't, I try to rinse out my sinuses with some saline spray solution that you can get for little $ at the drug store. The salt is buffered to match the PH of the nasal membranes so it won't sting. Do a couple of spray in each sinus and then gently blow. that will remove some of the irritants and help keep the sinuses clear.
My allergies got better as I got older. now they only bother me a couple times a year. I hope this helps your son.

take an antibiotic , if you can get doxycycline make sure you take the full ten day dose and eat at least a sandwich or something fairly big so you dont get nausea then go buy florastor at walmart or pharmacy and you will be fine