Here's my Zaino 3-bucket, indoor, low-drip method. I came up with this one cold winter day where I couldn't possibly wash with a hose outside, and I couldn't possibly drive the prowler as dirty as it was.
Three buckets:
#1. Carwash with sponge/applicator/whatever (I'll call it Applicator)
#2. Plain water with sponge/towel/whatever (I'll call it Sponge)
#3. Empty bucket
Apply carwash to a panel or smaller area. Squeeze (dirty) excess into empty bucket. Unsqueeeze in clean water and then squeeze into empty bucket to clean Applicator. Unsqueeze and leave in carwash bucket.
Use sponge with clean water to wipe down and remove appplied carwash. Squeeze (dirty/sudsy) excess into empty bucket. Unsqueeze in clean water and then squeeze into empty bucket to clean Sponge. Unsqueeze and leave in clean water bucket.
Repeat if necessary, or move on to another area.
Basically, you're applying carwash and removing dirt in step 1, then cleaning Applicator. You're applying water and removing dirt/carwash in step 2, then cleaning Sponge.
Yes, I realize that only about half of the carwash is being removed - but this is a BENEFIT. I use Zaino and per
www.Zaino.com, Z-7 carwash applies a "reinforcing layer of polish and UV protection", so I figure leaving some on can only help. The bonus occurs when it rains, the carwash suds off, and you get a FREE CARWASH.
Works for me. If you want to try this, make sure that the car wash that you use doesn't require complete removal.
