MowOot and Trans-anal Irrigation fOr coNstipation

Inclusion Criteria: 1. Adult people (18 yo or older) of any gender 2. Attending their pre-scheduled on-site visit to the site (The Sir Alan Parks Physiology \& Pelvic Floor Biofeedback Unit \| Central Middlesex Hospital) due to constipation (Symptoms meeting the American College of Gastroenterology definition of chronic constipation: unsatisfactory defaecation characterized by infrequent stool, difficult stool passage or both for at least previous 3 months. 3. Bothered by their constipation 4. Failed biofeedback (in absence of outlet problems) 5. In waiting list to use TAI 6. Able to undertake the treatment with the MOWOOT device or TAI themselves, or with a carer willing to do it 7. Able to understand the study requirements 8. Able to understand written and spoken English (due to questionnaire validity) 9. Able and willing to provide written informed consent to participate Exclusion Criteria: A subject will not be eligible for inclusion in this study if any of the following criteria apply: Disease phenotype exclusion criteria: * Irritable Bowel Syndrome with Diarrhoea (IBS-D) or alternating constipation and diarrhoea (IBSmix): (not due to laxative use) * Inflammatory Bowel Disease (IBD) * Significant outlet problem * Trapping rectocele * Intra anal rectal intussusception * External rectal prolapse Device-related exclusion criteria: * Abdominal perimeter ≤65cm or ≥130cm * Unable to independently use the MOWOOT technology, unless a carer is available daily to assist Other medical conditions, medications and contraindications: * Pregnancy or attempt to become pregnant in the next 6 months. * Previous large bowel resection * Active anorexia or bulimia * Active abdominal cancer * Large inguinal or umbilical hernia * Recent abdominal scars, abdominal wounds or skin disorders that may make abdominal massage uncomfortable * Any condition that contraindicates abdominal massage. * Significant abdominal pain * Participation in another parallel interventional clinical trial or less than 2 months from participation in a previous interventional clinical trial * Planned surgery\* if it might be within trial dates (\* minor surgery not affecting adherence to treatment is allowed)