You are right you can not in WI. Although baiting is not same as feeding this is two different things. Even addressed as two different things in WI and even though your baiting regs. stay the same in Jan they decided they needed a statewide ban on feeding due to problem with cwd.
In fact due to Chronic Waste Disease in WI they not only will have a statewide ban on feeding but also statewide ban on the sell of sense attractants coming from deer biproducts unless from certified cwd free ranch.
There's quite a lot going on there right now to try and eliminate cwd .