If we find a toothbrush or other odd item caused the problem, that's on the tenant.

But I've never heard of anyone from the lender coming and physically checking to see if your 'clothes and toothbrush' are actually there to confirm you living there. 

., you can also leave things like toothbrush/toothpaste combos, sleeping masks, ear plugs, makeup wipes, and more, all add to the value and usability of the basket.

You can also leave out some bulk hotel toothbrush/toothpastes, make up removers, earplugs, sleeping masks, etc. if you really want to step up a "In Case You Forgot" basket.You can keep a closet with extra of things that has a lock on it and if someone is irrate because they don't have enough pods, you can at least have a back up solution for them if you choose too. 

I heard about a great system for improving my dental health, which requires purchasing a second toothbrush, a Sonicare, for minutes 3 and 4.I go to the dentist, and she tells me how great my teeth are doing.

Quote from @Collin Hays: I've been working on an invention over the winter - an all-in-one toilet paper and toothbrush.

Free toothbrushes, floss, and toothpaste from your dentist. 

Quote from @Jonathan Greene: Quote from @James Hamling: Thing is @Jonathan Greene, your message, as true as it may be, comes across to a whole generation like that of the person giving away apples and tooth brushes for Halloween..... 

Does providing complementally k-cups/teas, popcorn, spices, toiletry essentials (toothbrushes, floss, bath wash, shampoo, conditioner, soap, paper products, makeup remover, laundry detergent, firewood with firestarters for the fireplace and firepit constitute as substantial services?

Vacuum out the gap first... sometimes use a toothbrush to make sure there isn't dirt in there that will prevent clicking together.