I had Roberts clean my septic tank in January 2012, two months later I have major issues with my system. When they were pumping the tank I asked them if I had a two reservoir tank with a filter, he said no. He also dumped a bag of Lime into my tank saying it was to help break up the solids so he could better pump it out. I have now discovered that putting they Lime in the tank is bad. It kills to good bacteria in the tank. He only put the lime in the tank to help himself, so when he unloads his truck it helps with the odor. I've also found out that I do have a two reservoir tank with a filter and both reservoirs should have been pumped out along with the filter having been cleaned. I now have over saturated lines which is causing problems in my yard. I don't like being taking advance of, and thats just what Roberts has done. I would not recommend them to anyone.