The term “satellite sites” is used to refer to informal harm reduction hubs operating out of the homes of people who use drugs. Operating in Toronto for more than 20 years, these sites offer access to sterile drug use supplies outside of more formal settings like health centres. Although many satellite sites offer much more than this – including naloxone and overdose response training, needle disposal and referrals to healthcare services. Satellite programs emerged from the recognition that people who use drugs were already doing this work within their communities, operating informally to meet harm reduction needs and respond to a range of other health needs.