
My sister has original ( house bit in 1930 ish ) striped parquat (sp) They just wash that with damp mop and bio or similar admittedly its not varnished but I cant see why that would make any difference.
The have been in the house for around 15 years doing that and it looks fine. Any spills and with dog and children there arep plenty she wipes up with mr muscle spray kitchen cleaner.