Read the fine print on any notifications you received.
In my county,
once you get notification of tax sale auction,
they no longer accept a personal or company checks.
So it would be best to take cash.
Obviously you are already delinquent if it is going to tax sale auction,
and if you have a home loan,
you may be considered in default,
unless your lender neglected to pay them from escrow.
I originally had the latter problem when both the title company (1st installment)
and my lender (2nd installment)
failed to pay tax on part of my double lot.
I had to come up with the cash before the auction and sort it out with escrow later.