Duct cleaning costs $280-400 depends on detergents and kind of service, numbers of openings - big house might get more expensive. 

Dumping coffee grounds or grease down the drain, using powdered detergents (both laundry and dish) and flushing feminine hygiene products are killer on your septic system.  

We eliminated them in our office with a nightly regiment of Dawn detergent down the drain for a couple of nights.

On move-in day we surprise the new tenant with a move-in gift package of our favorite cleaning products in a cleaning bucket, a new cutting board, toilet paper, liquid hand soap, paper towels, disinfectant cleaning wipes, dish washing liquid or dishwasher detergent.

Things you are responsible with an Airbnb, which you likely are not paying as a long term rental: utilities, landscaping, furniture, sheets and towels, toilet paper, paper towels, coffee, soap and shampoo, detergent for laundering your linens, cleaning supplies for cleaner, etc.

I can also offer a washing machine, dryer and detergent.

Can I charge my tenant for repairs to the dishwasher because they used regular dish soap instead of dishwaster detergent?

Your best bet is hot water and Lysol sanitizer and a great detergent.

If after switching to LED you still feel bad for the tenant, buy them a bottle of laundry detergent to cover the cost of the electricity.

Lint, hair, and undissolved detergent pods can easily clog the small holes in here and cause the water to come out.