Before we had a dumpster, the homeless from tent city kept stealing our trash cans for collecting recycling.

They use it to heat their shops or they can recycle it.

Renters dont recycle so they will fill your dumpster with all their gdam amazon boxes.   

Now he asks me and I can divert him sometimes.

@Kasay MardisOne thing to check is the outside of the building- make sure gutters are clean and water is diverted away from the foundation.

I had problems just getting tenants at an old duplex to share small recycling bins, so I forsee issues with dumpster sharing.

Next time you are at a metal recycler, grab some!  

I think it is reasonable that the front house have 2 trash cans and 2 recycle bins (one each for each House).  

Then you meet them at the property, hand them the key and give expectations such as when and how to replace air filters, properly use the thermostat including making sure the fan is on 'auto' and never 'on', where the trash/recycling cans are kept and when to put them at the curb, etc. 

I suspect his actual reason for saying this is to divert attention away from real estate because his advice doesn’t apply at all to the sector.