Woodworm infestation in furniture can be recognised by small round holes on the surface of the timber and the gritty bore-dust that is left behind. These holes are most likely to be found near joints or on the undersides or backs of furniture. If the furniture has a surface coating such as paint or varnish, the thorough advice is to completely strip the furniture by sanding or stripping then treating with a woodworm killer such as Barrettine Premier Woodworm Killer Spray or Cuprinol Woodworm Killer (WB). However, some customers just treat the affected area and re-coat or paint.