Like 2 sometimes 3. Chopping boards hold a lot of bacteria when they start getting cut up and they're like a fiver from Ikea, may as well just replace it whenever we go there.
I mean anecdotally I don't think I've ever got ill from the bacteria on my own chopping boards, even if they do harbour bacteria then it can't be worth throwing out big bits of plastic every few months?
End grain boards don’t get cut up to the same extent. They’re easy to re-surface with a bit of sandpaper. The occasional wipe with linseed oil prevents absorption. Cheap boards are a false economy imho.
As in you replace your chopping hoard every 6m?
That is insane!
How many people are you cooking for on a daily basis?