adapter-wooliesDetergentBottle-to-60mlDrinkPourer

A threaded cap with a hole, into which you can shove a 60ml spirit/liquor measurer.
https://www.aliexpress.com/item/Portable-45-60ml-Quick-Shot-Measure-Measurement-Pourer-Drinks-Wine-Cocktail-Dispenser-Home-Tools-Bottle-Nozzle/32919875487.html

Actual amount dispensed is untested, but it looks about right.

PLA will probably degrade with exposure to detergents, but in this context I'm sure it will take a considerable amount of time.

VERDICT: After using it for a week or two I decided this is a fail: Water in the the detergent evaporates and becomes too viscous to allow the ball in the pourer to operate. So either the liquid pours out continuously, or the nozzle is entirely blocked. The adapter part is fine, but functionally this object is a fail when used with any liquid that thickens if it is allowed to evaporate or accumulate.