I've been in my new house for a few months now, and I end up plunging one of our two toilets about once a week - they tend to swap turns on which one gets to be finicky each week. Is there a more serious cause behind this, or do I just have 'crappy' (hehe) toilets? I don't know if it could be an issue with my septic system. The previous owners weren't too into home repair, so I have no idea if it's ever been pumped, but the house is only 7 years old.
While I have managed to refine my plunging technique to an art, I'd appreciate any advice that will let me take a break.