They are also limiting in-store capacity and ensuring machines are sanitized in between each use.

Masks and distance and hand sanitizer.

Also, with covid, there are more regulations as for sanitizing the space.  

Guests are expecting to walk into a clean place where surfaces have been sanitized and clutter or “things” are put away.

The industry is adopting new cleaning and safety protocols to mitigate coronavirus risks during air travel, installing high-performance air filtration systems, sanitizing planes, and educating staff.

I found that when doing this everyone keeps up with the shared areas and really my cleaner is just going in to sanitize restrooms, wipe down countertops, dust and mop.Don't try to delegate any home maintenance , just outsource it and include it in the rent.

If it is affecting your unit and you are sure its because of the next unit, you can get Department of Sanitation involved and copy your hoa on that email. 

-Deduct labor and disposal for carpet removal fees in all 3 rooms.3)Replacement of broken vertical blinds.4)Cleaning off and sanitizing of Mold/mildew on walls of 2 bathrooms5)Cleaning of unit to return it to the condition in which they first rented house.6)Damaged walls (holes) and door (holes).

“Essential consumer goods or services” means goods or services vital andnecessary for the health, safety, and welfare of the public, including withoutlimitation: food, water, fuel, gasoline, housing, shelter, transportation, healthcare goods and services, pharmaceuticals, medical supplies, and personalhygiene, sanitation, and cleaning goods.c.

In many parts of the US, investor business is back to normal with increased precautions of masks, sanitizer, distance, etc.