The previous cleaning regime could take up to 2 hours and sometimes had to be undertaken at specialist cleaning centres, which could be some distance from the ambulance station or hospital.
Gallai'r drefn lanhau flaenorol gymryd hyd at ddwy awr ac weithiau bu'n rhaid gwneud y gwaith glanhau mewn canolfannau glanhau arbenigol, a allai fod gryn bellter o'r orsaf ambiwlans neu'r ysbyty.