Just had the carpets cleaned. 

Home is also kind of mess ..with weed smoking in the house and dog poo in backyard not cleaning up after and so forth.How to proceed here ?

Like is used to clean the driveway with when there's an oil spill. 

Clean facility easy and hard, value add steps. 

Clean the place up and move on.It's highly unlikely he would ever come back to you when he has child p*rn charges on his record.

In response we did a deep clean on the unit and couldn't find any bed bugs but found some possible bug casing and bug excrement.

You will have much higher cleaning/maintenance costs, higher turnover, unpaid rent, evictions, etc.

Purchase price: $279,000 Cash invested: $45,000 Sale price: $425,000 Off-market property I found, contacted the sellers and proposed a cash offer of $279K "as is" (suggesting we would clean out the entire property & dispose of whatever the sellers didn't want.).

The apartment probably could use some cleaning beyond what Tenant A will do but doesn't need any serious work.

It works, just not as cleanly as we would like.