Ok, I need you heavy hitters out there. I have wanted a disposal for years, but DH keeps saying that because we are on a septic system(it's one of those aerobic ones); I can't have one!! Is this correct? May I have some of your very worthy personal comments, advice, whatever? This country wife of 37 years is so damn tired of all that gunk in the sink! BTW, sink setup is 2 SS sinks with the smaller prep sink on the left. Thank you so much!!