Tournament referees will generally try to keep the competition mats clean,
as described in the Field Setup on page 15


   -

   Field Mat – Make sure the Mat touches the south Border Wall, and is
   centered east to west. Avoid cleaning the Mat with anything that will leave
   a residue. Any residue, sticky or slippery, will affect the Robot’s
   performance compared to a new Mat (many tournaments use new Mats). Use a
   vacuum and/or damp cloth for dust and debris (above and below the Mat).

Most competition tables are set up the night before a tournament, or
possibly the morning of the event, so there shouldn't be much time for
condensation to occur.  If a referee saw liquid water on a mat, I would
expect that he or she would try to clean it away.  In my experience, we're
much more accustomed to dealing with dust than water.

Steve Scherr
Virginia-DC FLL Referee Advisor

On Wed, Nov 4, 2015 at 3:34 PM, Kyongchan Song <[log in to unmask]> wrote:

> Hi.
>
> Recently we notice this year mission mat is different and very sensitive
> to humidity.
> We experienced more slip of our robot on the mat after rain and humid day.
> Is anyone has similar experience?
>
> Is is possible that in the morning of the competition day, a judge can
> wipe the mat with dry cloth to remove some moisture from a map?
>
> Thank you.
>
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