Epidemiological data cited in the Diagnostic and Statistical Manual of Mental Disorders (APA, 2013) estimate the prevalence of syllogomania (hoarding) to be between 2% and 6% of the general population in Western countries, with the proportion being higher among people aged 55 and over. Generally, the responsibility of responding to the needs of older adults who have hoarding behaviours, and to help them through their difficulty disposing of their possessions and refusal to receive formal supportive help, lies with family members and loved ones. Our study aimed to better understand how family caregivers coordinate with their loved ones who have hoarding behaviours and with the other actors involved, and how this is reflected in their interactions. We conducted semi-structured interviews with eleven caregivers and eight social workers in the Quebec City region; the material collected was subjected to a thematic content analysis. Our results suggest that the hoarding problem is an object of negotiation within the dyad composed of the family caregiver and the care receiver, as well as in interactions with other formal caregivers. It is also noted that social workers sometimes have to play the role of mediators and advocates for the rights of the different actors involved, in order to allow for adjustments in the various interactions.