HELP: Is this safe? Want to wash engine and components due to salt-rusting?

I safely cleaned engines and bay areas on three vehicles using spray can products from parts stores. I used foaming type cleaners, not Gunk type de-greasers, following the directions and not using high pressure water. There was no problems with restarting the engines.The plug wires and other components were in good condition. I then wiped all accessible surfaces with a cloth.