[porto52]

Should I try DNA if I can convince the courier to leave the package at the door without a signature?

Don't mention anything to the driver- It will work against you If he happens to document your Instructions.

Given It's Amazon, establish whether an OTP will be required on delivery. If not, you're good to go, Irrespective of a signature on receipt of goods. A package that's marked as delivered, by no means concludes that you personally received It.

I've seen some people say that DNA is better suited to lower price orders. I get that a lot depends on the circumstances of the delivery/order or account.

My main reason against DNA, is that I don't want to get any of the delivery guys in trouble.

Unbeknownst to you, a household member accepted the package and Informed you at a later time.

Return the Items thereafter.

I get that, but if I send a box of rocks, and Amazon says "it seems you sent us a box of rocks, no refund for you", do I still try and say "my brother/cousin/assistant sent the box of rocks by mistake, please let me send you the actual items now"?