The foam will break down in the blue Micro fiber pads if you dry them above 140 degrees and especially if you use bleach when washing. It is best to wash your pads ( any kind) while they are still wet from the job. Dont let them dry out and you will find they seem to launder a bit easier and better. The drier will also shorten the service life of the pad, but may be needed on some types to remove lint. Run on low heat for 10 minutes or so and let air dry if time permits.