This is called a value trap.

There is no perfect deal, so be aware of this to avoid the trap of analysis paralysis. 

The tenant thinks I'm responsible to pay to trap a skunk that's bothering them by hanging out stinking up the yard and messing with their cat .  

There is a box in Section 6 where you check off "Free Check Writing."

Then two weeks later I have pest control go back in and bait in the kitchen (or any place else the resident has seen roaches) Also after the spray we put down sticky traps to monitor the activity.  

The Code states, "[t]he tenant of a structure containing a single housing unit shall be responsible for the extermination of any insects, rodents or other pests in the structure or the premises," but for larger properties "[e]ach owner of a structure containing 2 or more housing units shall be responsible for the extermination of any insects, rodents, or other pests in the structure or on the premises except where infestation within a housing unit is caused by a failure of the tenant to take reasonable action to prevent the infestation within the housing unit."

You certainly should have anticipated this possibility, worded your agreements accordingly, and not set yourself up for this self induced trap.

The buyers often feel trapped and must decide to take losses and walk away or still close on the property.

This experience has caused trapped equity (Gross Yield was 15% at purchase but as property value increases, they've reduced to 9%).

In Section 8 the amount that the tenant pays is dependent upon their agreement with the Housing Authority, which is dependent upon their income, family size, etc.