Awareness Stacking

I've finally got my hands on the Finders Keepers book. I know the book was nerfed hard, but still trying to decide whether to stack awareness options for the book.
So my question being, do we know whether awareness buffs are additive or multiplicative? I.e. is there any point to stacking additional awareness for the month?

According to Andyman's Book Guide:

Book : Finders Keepers

Drastically increases city item spawns for 31 days.

January is a good time to read this book as it coincides with Awareness week. Technically, it stacks with awareness derived from education and from job specials such as the Fireworks Stand and Zoo... but it's ultimately a crap shoot! Most players tend to find at least one good item. (Usually a single stat enhancer, a Cesium-137, an Egyptian Amulet, etc.)

So you should probably wait until awareness week if you're patient.

Wiki link to Awareness

i have had friends in a candle shop, Max merits, on the book during awareness week and receive nothing worth while and have had friend with no merits, no book, no awareness percentages whatsoever finding SEs in the city. It is all RNG based and wish you the best luck. While waiting for awareness week is the go to move, you can do everything right and not be rewarded as the findings are RNG. I wish you best of luck with your book. Perhaps you will be able to find a Hazmat suit in the city.

Don’t bother waiting until awareness week. That’s 8 months away. The money you could make with a decent find now outweighs waiting for that week specifically.

Dont one of the drugs also help boost awareness temporarily?

ecstasy and LSD used to in the past, not anymore though

I would be one of those friends. I dropped out of the Candle Shop and removed all awareness merits immediately after out of spite. Never again. RNGesus demands more sacrifice apparently.