Drivers have been urged to 'swipe' their dashboard with a damp cloth to avoid a common health issue. It is thought to affect at least one in four people in the UK. According to the NHS , hay fever symptoms are typically worse between late March and September, when the pollen count is at its highest. While the NHS says there is no cure for hay fever and it cannot be prevented, sufferers can help to ease their symptoms by taking precautions, such as dusting with a damp cloth and using pollen