Septic tanks, even though they're full of crap (no pun intended), are sensitive things - the bacteria are highly susceptible to overload, bacteria soaps, bleach, chemicals, and other stuff that simply won't break down or will kill off the bacterial load.

“I can bleach it and scrub, but it comes back in a couple days.”Mold growing in Amber Allen's apartment 1/2×Amber AllenMold along the wall in Amber Allen's apartmentThe apartment often lacks heat, even during Colorado’s coldest days.

It looks like there are spots where maybe bleach was spilled.

The Wark o' the Weavers We're all met together here t' set and t' crackWi' oor glasses in oor hands and oor wark upon oor backAnd there's no' a traede among them a' can either men' or makIf it wasnae for the wark o' the weaversChorus: If it wasnae for the weavers, what would we doWe wouldnae hae claeth maede o' oor woo'We wouldnae hae a coat, neither black nor blueGin it wasnae for the wark o' the weavers The hireman chiels, they mock us and crack aye abootsThey say that we are thin faced, bleached like clootsAnd yet for all their mockery, they canna dae wi'ootsNa, they wanna want the wark o' the weavers (Chorus)There's oor wrichts and oor slaters and glaziers and a'Oor doctors and oor ministers. and them that live bae lawAnd oor friens in Sooth Americae, though them we never sawBut we cannae wear the wark o' the weavers(Chorus)Oor sailo's and oor so'diers, we can they're all bauldBut if they hadnae claes, faith, they couldnae fecht for cauldThe high and low, the rich and pair, a' body young and auldThey wanna want the wark o' the weavers(Chorus)There's folk that's independent o' aither tra'esman warkThe women need nae barbers and dykers need nae clerkBut none o' them can dae wi' oot a coat or a sarkNay, they wanna want the wark o' the weavers(Chorus)The weavin' is a trade that never can failAs lang 's we need ae cloot to keep another haleSo let us aye be merry out a bikker o' guid aleAnd drink tae the health o' the weavers(Chorus)

We bleached so strong, I thought my wife would die.

We then bleached the subfloor and that seemed to rid of the smell.

I have now gone to all white towels, white sheets and white duvet covers since 1) they bleach up nicely 2) they make the beds/rooms look bigger and cleaner (I put a colorful throw across the bottom of the bed, and sometimes colored shams, to make it look cheerful) and 3) they are interchangeable between rooms and properties.The time to clean for a given property really varies depending on how many people stay, and whether there were pets or not.

Arthur Garcia New tenant, first week in the house, I stopped by to check and make sure everything was ok - there were fresh bleach-foot-prints from the garage (where the laundry room is) to the living room on brand new carpet.

The Big One sheets wash up great, take bleach no problem and wrinkles are minimal. 

The cost of 10 gals of bleach and your labor.