Before entering the cleanroom, DO:
Enter only through the ante-room – no shortcuts.
Walk across tacky mat to clean soles of your shoes.      
Wear shoe covers.
Wear cleanroom garments (frock or bunny suit).
Wear a bouffant cap & beard cover (if necessary). 
Wear gloves (if necessary).
Wipe down any hand or power  tools. 

DON’Ts, when inside the cleanroom:
Never remove any cleanroom garments.
No unnecessary paper products or paper bags.
No wooden pallets, ladders or wood-handled tools. 
No cardboard boxes or packing peanuts.
No pencils or erasers – pens only.
Never bring in unclean or rusty tools.
No Food, No Drink, No Chewing Gum – ever. No excessive or dangling jewelry.
DON’T raise your sleeve to observe your watch – checkout the wall clock within the cleanroom.

Whenever leaving the cleanroom, DO:
Exit only through the ante-room – no shortcuts.
Remove cleanroom garments within the ante-room.
Carefully hang up garment(s).
Properly store or dispose of bouffant & shoe covers.
Take your time – haste does make waste.

This cleanroom tip was contributed by Ron Perry of RPA Cleanroom Products. http://000309j.rcomhost.com/