I just came across this cordless power washer.
You could fill a bucket in the house with warm water if the pipes are frozen.
Pretty cool. I might get one myself for rinsing off the salt and grime in between proper washes.
Pretty cool if it works well
https://www.cpopowertools.com/dewalt...CABEgLM-fD_BwE
Edit:watched a video review and seems like it's not powerful enough really to wash off really baked on bugs and stuff.