Well because the 213 can't have a slide topper (not possible) I usually just drag the picnic table over and take the broom and brush off the top of the slideout. The squeegee seems to do a pretty good job on our slideout. We have also started putting the couch cushions on the bed instead of on the dinette as my slideout has marked up one of the cushions while it slides in and out.
2010 Jayco JayFeather 213 EXP
2016 Ford F-150, 4x4, 3.5L ECOBOOST, MaxTow, Supercrew, 6.5FT, 3.55 axle