Often i see dirty, soggy cloths in kitchens that are obviously used to wipe around the kitchen, but you could actually be doing more harm than good. Damp cloths are a breeding ground for bacteria and germs so you are probably wiping germs all over your kitchen and bathroom.
After using your cloths try soaking them overnight in hot water with a drop of bleach which will kill 100% of any nasties lurking in your cloths and sponges. Microfibre cloths should be shaken out after used for dusting. If they have been used for anything more then running them under a hot tap with a little washing up liquid will loosen the fibres and bring them back to life. Air dry but do not put them in the tumble drier with drier sheets as they will no longer hold the static, which is what makes them attract and hold the dust.
Finally, once a week , throw all your cloths, sponges, flannels,tea towels, micro fibre cloths, etc into the washing machine. Do not add fabric softener as this will cause the micro fibre to lose static as well. I usually add a drop of disinfectant because i love the smell, but it's not necessary. Wash them all on 90 and that will kill all bacteria. Let them air dry if possible.
Another tip for sponges is to nuke them in the microwave just for a minute. Note, they must be wet and contain no hidden fragments of metal. This will also make your microwave easier to clean.
On between washes, if you notice any nasty smells in your cloths then add a drop of white vinegar.