The toilets off Bridge Road have been targeted five times in three months and have only been open to the public for one day during that time.

On one occasion someone threw blocks or boulders at the toilets, smashing tiles.

On another someone forced their way inside and turned on the taps before leaving.

Sutton Bridge parish councillors believe youngsters are squeezing through a gap between a gate and canopy to the toilets to gain entry.

But they are hopeful a bar blocking the gap, installed by South Holland District Council, will stop the problem and mean they can re-open the facility.

Coun Michael Booth said it was unacceptable that the town did not have usable toilets.

He said: "There was recently a couple driving from Grantham to the Norfolk Broads who passed through Sutton Bridge and wanted to use the toilets.

"Because they were locked up I had to send them to Long Sutton because the alternative was King's Lynn, which is too far away.

"Whenever the council repairs it, the next day these people go in and smash it up again.

"We have serious problems but we are hoping to sort them out."

The council has acted to cut bushes back, which were obscuring the toilets from CCTV at the Londis store across the road.

At times children have been seen clambering ten feet to the roof of the building, causing concerns that they could be hurt.