If appliances were not included and tenant left their own behind (even if they are clean), that can be a separate haul away chargeDid not clean backsplashDid not clean bathroom - tub, toilet, etc.Floors - not swept, mopped, vacuumed, etc.Dead bugs and/or bug traps not removed and disposed ofTrash in yard - people forget that the yard is part of the property and also needs to be cleaned up.

Put it wall to wall throughout the entire unit, except maybe the bathroom.I used to manage an old apartment building that was bare bones - a good price in a good neighborhood, clean, well-maintained (great manager ha ha), but mostly really tiny studios, no washer/dryers even in the building at all, showers only, no disposal - you get the picture. 

I am much more disposed to flexibility if they notify me as soon as they know there is an issue, rather than me finding out after the problem surfaces.

Please consult with someone who can legally provide real estate law advice where you live.The Arizona Residential Landlord and Tenant Act (ARLTA) requires a tenant to “keep that part of the premises that he occupies and uses as clean and safe as the condition of the premises permit” and to “dispose from his dwelling unit all ashes, rubbish, garbage and other waste in a clean and safe manner” (A.R.S. 33-1341) while the landlord must “comply with the requirements of applicable building codes materially affecting health and safety”; “make all repairs and do whatever is necessary to put and keep the premises in a fit and habitable condition”; and “keep all common areas of the premises in a clean and safe condition” (A.R.S. 33-1324).

Looks like they disposed of whatever the chemical was in the trash bin,  and put the bin on the concrete driveway where it leaked further creating another dark stain that the power washer also couldn't get out.

In my state, we can post an 'abandoned property notice' which gives the tenant a specified period of time to collect their property or we can dispose of it. 

No garbage disposal, limit chlorine bleach, don't pour grease down sink.

If it is less itemize projected rent until new tenant for the  difference or trash disposal if you haven't completed it.

The problem with grouping the activities is that they end up tied together so they do not allow losses etc to be released at time of sale until the entire activity has been disposed of which could mean multiple properties.

When they move out you will be left with a pool to rip out and dispose of.I am trying to be direct here because you are about to make a huge mistake by allowing that pool to stay.