The phrase
"soapy mixture" refers to a combination of soap and water.
Full definition
Let the diapers soak 5 - 10 minutes in hot water, then dip the scrub brush in a hot
water soapy mixture and scrub on both sides of the fleece.
Wash these with a
mild soapy mixture or with just hot water if they are not visibly dirty.
Use hot water and a
diluted soapy mixture to scrub the insides with a scrubber on a long handle; a water bottle brush is a good solution.
The windshield washer provides extra visibility by spraying the windshield with
a soapy mixture, and then washing it away.
Try to keep your cat's neck and body completely covered in
this soapy mixture for several minutes before you wash it off.
I used a rag to wipe up drips on the window sills from
the soapy mixture and a towel on the floor underneath my work surface — you'll need those.