1. Unwilling to participate or opted-out of the trial (resident, or family, if resident lacks capacity) 2. Currently consuming a soft diet or using a thickener 3. Using antiseptic mouthwash 4. Identified by care home staff to be in the last few days of life 5. Short-term respite care 6. Care home staff

1. Unwilling to participate or opted-out of the trial (resident, or family, if resident lacks capacity) 2. Currently consuming a soft diet or using a thickener 3. Using antiseptic mouthwash 4. Identified by care home staff to be in the last few days of life 5. Short-term respite care 6. Care home staff