To some extent designing for cleaning may seem to be an irrational choice. After all, why move the target when it’s easier to move the gun? Others may see it as an inspired choice.

The user who wishes to improve cleaning may opt to select “stronger” solvents or solvents with lower surface tension; aqueous spray cleaning systems with more nozzles discharging at a higher pressure; detergents capable of surviving at higher temperature in hot water; or ultrasonic transducers which allow more control of the pressure waveform.

But another approach is possible: to improve cleaning, don’t change the cleaning system; change the part to make the cleaning job easier. That’s design for cleaning (DFC). Basically, DFC is the reverse of how parts and systems are usually designed.

Source: Design for Cleaning, Part 1: Good Words or Good Idea?