blue bubbles clean cleanliness colors colours hand-wash hands health hygiene hygienic red sign soap suds washing washing hands white 3-D appearance color coloration colored colour coloured communicating communication expressing expression eye-catching hand-washing indication information informative informing notification notifying plastic raised semi-transparent signs surface surfaces surfacing symbols texture textured textures thick thin washing-hands words cleaning detergent hand housechores sponge window angles cloth dark dark blue edge edges fabric face-cloth face-washer folded folds hand-cloth hand-towel material merged purple smooth textile wash wash-cloth attached Australia chain clamped clamps concrete double-sided drying edging gray grey hand-wringer handle heavy historic history laundry laundry-trough manual metal old olden-days pioneering plumbing plumbing-fixtures pump ribbed squeeze squeezing stand trough wall washing-board washroom wood wooden-wall wooden-washing-tongs wringer bar basin bathroom cleanse dirty disinfect faucet germ infection Lather prevent prevention rinse sanitize scrub sink soak soaking soapy spot sterile tap water wet woman black bucket direction hand-pump instruction rust spout