I usually buy an inexpensive tub/bucket container of some kind and fill it with several trial/travel size items like dish soap, hand soap, detergent, etc.  

The only advice I can give is get a security deposit and get in writing what you provide and what they need to provide; internet, laundry detergent, refrigerator, washer, dryer, etc.

Leave instructions on how it is used (ie no dish soap) and a small box of dishwasher detergent or some dishwasher pods, so they can see what to use.

I have no problem buying generic brand detergent because to me there is no difference.

Not allowing the use of personal wipes, not disposing of grease in the system, and usage of friendly laundry detergent should be enforced strictly to ensure longevity.  

Like toilet paper, soap, detergent, etc.12.

Dish detergent does not dissolve solid material, including  some sauces which can spray Pest control should only be sent with proof of pests and they should report back as to whether the tenant caused the repair.I think you have a great tenant you won't have to do much for and can keep for a long time.

Darker e-juices can stain carpet if spilled, but this is probably less of a risk than a kid spilling juice on the carpet and can usually be cleaned out with some dish detergent.