We have a front bathroom that stinks like urine. I scrub it everyday, but to no avail, the smell comes back. I thought maybe one of our two little boys wasn't aiming correctly, but that's not the case.

About 3 months ago our HOA sent out a septic company to come pump out the tank (routine stuff, every 5 years..) the smell didn't start until after they had pumped. It took maybe 3 weeks and everyday it gets stronger.

I have read on other sites that I should check the vent to make sure it's clean (no leaves, etc.) in it, but if that's not the case, what else may be wrong? I have heard others with similar problems replace the wax ring? Can one do this themselves, or is a professional job? Thanks!!!