Hello, Bob M !
I use a liquid microfiber cleaner, the least expensive sometimes is made by Chemical Guys... Gallon Jug.. lasts for a long time..
Cleans really well and leaves the microfibers soft and fluffed up.. Low heat in the dryer.. Sometimes add a little Distilled White Vinegar into the Rinse Cycle.. This C/G microfiber cleaner is very low foaming..
For all foam pads - Snappy Clean Powder, made by the best maker of foam pads, Lake Country.. Easy to use powder.. Put the contents into a 5-gallon bucket..
Fill to 3 gallons or so.. Put all the dirty pads in there to soak.. Push the all down so they soak up the product.. Later, take them and wash them in the bucket using long rubber gloves..
Squeeze them a few times and fill them back up with the soap.. Its zero foaming, so very easy to rinse out..
Rinse them good... They will come out really clean and have no residue, etc., in them that will change how they work next time you use them..
Dan F