Salisbury have 300 tickets left to sell for next Saturday's FA Vase semi-final second leg tie against Hereford.
Manager Steve Claridge is hoping that his supporters will take up the remaining tickets as he doesn't want to see any more given to Hereford.
"Go and buy a ticket," he told JournalSport.
"They (Hereford) stuck us in a corner and they've got nine tenths of the ground and we don't want to open the ground up anymore for their fans."
"We've got to sell our tickets.
"If it's not done by Thursday we will probably be sending the tickets back.
"People have got an opportunity to come and snap those tickets up.
"We need you."
Meanwhile defender Calum Brockway will miss the rest of the season as he prepares to have an operation to get his shoulder put back in place.