I guess most of you would be familiar with mustached intruders on your lavatories. Yup I mean the roaches. Ever wondered where the hell they come from, even to the tallest of buildings. There will be roaches thriving in your septic tanks once they get filled up they’ll swim up through the drain pipes and enter your lavatories. So your monthly provision list will always contain ‘hit’ or ‘baygon’ when your septic tanks remain filled.