[pairodice]

I started thinking about it and there really is no way for ‘sap’ to get in with the seals holding air - if water can’t get in then tree sap would not. I cleaned the seals with a soap and water solution in a spray bottle then used a flat plastic tool with a polyester microfiber cleaning cloth. For the long sections under the slide out awning I put one of the cloths on a ‘swiffer’ mop head and sprayed the top of the slide with the soapy water spray bottle. Now the slide seals are nice and clean (as well as the slide itself).
I will wax/polish the slides tomorrow.
Then I will put some baby powder on the seals to keep them from sticking (and squeaking going down the road)...

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Soap and water, no solvents of any kind. I might try Murphy's oil soap for sap.

Thanks for the Murphys soap suggestion - if just normal soap does’t do the trick I’ll get some Murphys and try it...