This is the sponge I use to wash cars without marring the finish.

Purchase from Lowe’s, ProLine, Professional, Tile & Grout Sponge 7″ x 4.5″ x 2.25″, $1.98 each for ONR usage.

Sponge is too big for my hand to squeeze out all the water when rinsing out so I modified the sponge to fit my hand and the amount of ONR I use after pre-spraying the panel.

What I use is one 3 gallon pail [12 quart,] from Lowe’s $1.98, modified grit guard [cut to fit pail bottom] and 2 gallons of ONR mixture.

I do a one hand dip, release, smoosh the grit guard, suck up good water as we pull away, squeeze out excess [not too drippy] and off to the next area.

If you do not have a grit guard [I have these for sale,] squish and release the sponge a couple of times in the mixture so the dirt can release and drop to the bottom of your pail.

I slice my sponge in half length wise to make two [2] 7″ x 4.5″ x 1.125″ sponges.

I cut 1″ off the length of the sponges leaving me with two hand fitting 6″ x 4.5″ x 1.125″ wash media.

The two cutoffs are just great for nooks, crannies, door jambs, emblems, blah, blah, blah....

Being safety aware when cutting the sponge I do use a leather glove on the hand holding the sponge because the sponge is flexible and I like having 5 fingers on each hand.

A bread knife with that serrated edge worked well for me. Take your time cutting and you will do fine.

al