Here's an interesting read:
https://www.nejm.org/doi/full/10.1056/NEJMc2004973?query=featured_homeLike I said before, 72 hours should be sufficient. It's true that if loads of viable virus particles are placed on the most habitable surfaces and they are stored in the "best" way, virus particles can be found much longer than 72 hours... But those are lab conditions: an abundance of "fresh" viable particles, selected surfaces, ideal conditions. And even then, only a very small amount of virus particles are still more or less viable.
There is something else coming into play: the viral load... I've seen studies that HIV infected woman can have up to 900 hiv virus particles per ml of breast milk, but still allmost no babies get infected and become HIV positive after drinking the milk... Because the load is low. Your immune system comes into contact with potentially deadly viruses and bacteria on a daily basis. But as long as the load isn't to high, it'll deal with those pathogens.
Same here... If you wait 72 hours, the viral load on your package should be so low that you're basically in the clear. Especially because corona viruses die faster on cardboard (the box should be cardboard) and hopefully the goods inside of the box (plastic, stainless steel) were not touched for a longer time (how big are the odds somebody infected inserted the ASIC in the box and sent it out the same day).
Now, once again, i'm not a doctor, I haven't touched this stuff since college 20 years ago... Not that much studies have been carried out, and the ones that did weren't always conclusive. Even the ones that were conclusive sometimes came to different recommandations. But I wouldn't worry about it. Sure, if you want to be 100% sure you can always wait 2 weeks, but after reading up, i do think 72 hours should be more than sufficient to decrease the viable virus load to a level where any normal immune system should be able to kill the remaining virus particles.
This is not a promise tough... If it were me, i'd just wait 24-48 hours, but if you want to be sure, you should wait 72 hours, wair a tivec suit, gloves, mask,..., desinfect with chlorine,...