I wash my cleaning rags and mop heads on sanitize. If you don't have a sanitize cycle, do hot. Not sure if powder or liquid is best.

I've done both! The problem I've had with liquids sometimes is that between the liquid detergent and the residual cleaning product left on the cloth, it can become a SUDS OVERLOAD. I generally do a detergent-free prewash to rinse out the leftover cleaning material first.

Lately I've been washing my microfiber in Tide w/ Bleach powder.

I wash my microfibers in a similar manner to those above. I use mine to wash and wax cars frequently. Also, they are used for polishing and other cleaning methods around the house.

To remove any wax or excess cleaners I use a rinse and spin cycle with warm water and some Tide liquid. Then I start a whites cycle with hot water and extra rinse with Tide with bleach powder. This leaves them like new.

However, I dry my microfibers using the delicate cycle to remove any lint and keep them from getting musty when put away. With that I have never had an issue.

I know this is over kill but here's what the Chemical Guys have to say about caring for microfiber. They are made with polyester and polyimide so they can't take super hot temps. They can melt the fabric, especially in the dryer (use low temp. in the dryer).

Microfiber wash (detergent) or Die Free / Scent Free quality detergent.

EDIT: Liquid only for detergents.

Hot water is fine but you may damage (melt) using too high a temp. as with Sanitize.

Thanks George good advice.

I wash them at around 140f but hang them to dry. That goes for mop heads and micro fiber cloths and I wash the seperatly. I don't wash anything with my micro fibers than they don't collect lint. Remember they are poly(resistant to water) they need lots of water, plenty of space to move freely and a lower spin.

This is why I wonder if those that complain of odors not being removed from gym clothes are washing to many at one time as they really need free flow in water.

Pink0, thank you, thank you, thank you for the tip about the Target stuff for the Libman stuff!!!

I do as Alex does, prewash no detergent, followed by a 167 or 203 degree wash and normal tumble dry. I have done this since microfiber I first came in contact with it in the mid 1990.

I have seen all over youtube and mostly from cardetailers to wash in cold water, some even removed the hot water conection from the machine to be safe. I think it might be a difference between the cleaning industri and car detailing.

For professionell cleaning in Sweden all microfiber makers say 203 water wash or 140 domestic. Microfiber are made to remove dirt and germs, if washed to cold the germs will still be in the cloths and you will be spreading them around your house. Yes you can melt microfiber but you need more then hot water. When I worked in preeschool kitchen I used to boil my microfiber cloths on the stove in detergent. That was recommended by the maker if you did not have so many of them to wash in the machine.

For my small cleaning business, I wash microfiber in hot water with powdered detergent. Every wash is done using hot water, every other wash I use the sanitize setting, and occasionally I use regular chlorine bleach (the cloths and mop pads that I have can be bleached but the decreases the number of washes they can go through before needing to be replaced). I always use an extra rinse to make sure there's no soap residue left. Absolutely no fabric softener. Since I have so many cloths I've always dried mine in the dryer on high heat without having any issues, if I didn't have so many then I'd hang them to dry.

Look into your specific microfiber manufacturer's instructions, for example, my Rubbermaid Commercial microfiber mop pads can endure 500 washes with no bleach or 200 washes with bleach. I may be a bit rough when it comes to washing my microfiber but that's just because of all of the different germs they come into contact with being in other people's homes. If you're using them to clean your home then don't wash them in cold water, microfiber is designed to trap and hold onto lots of germs and bacteria and you want to wash those all out.

Bjorn is right hot water should not melt microfiber...and poly requires hot water in order to force the fibers open to release muck. I hated microfiber absolutly hated it until a few months ago I love them now. I had about 6--10 pks out in hubs garage never used still with the wrapper around them that someone gave me..I gave them to hubs but he had enough and never opened mine so I stole them back..I now have about 75 of these guys. I do what Roc does color code them for different cleaning purposes. ..light blue for mirrors ect ect. nothing cleans like microfiber. I used to struggle with windows because I only use water no chemicals on windows...microfiber makes easy work of them now.

Ok I'm done singing their praises

I have a ton of microfibers... they're used for everything around the house. Because of that, they go through the sanitize cycle every week with a small amount of powder or liquid detergent, with a pre-wash with a tiny bit of detergent. Some I've had for over 5 years- the only stains on them are from when I cleaned up some latex paint. I also throw them in the dryer without guilt.

They're inexpensive enough from Costco that it's fine to replace them every couple of years. Cheaper than paper towels.

I don't make a habit of it, but my microfiber towels have been washed at 200F a few times and don't seem any worse.