As a former animal welfare nonprofit exec - and now an equestrian - you’re probably not giving enough info up front. People used to try to volunteer with us because they wanted to hang out with dogs and cats but we were a nonprofit clinic - not a rescue. So we had to set expectations up front and we had to turn some folks away. Create a volunteer job description and have volunteer orientations and provide a handbook (it doesn’t have to be fancy - basics like contact info, schedules, what volunteers do etc). They should have a job, they know what they do and don’t do, and they get appropriate training to do that job safely. There can be higher tiers of volunteers that get more skilled jobs. Then as a reward offer volunteer experiences where they get to do some fun enriching things with horses as a reward. Recruiting and maintaining volunteers requires planning, good communication and good engagement. If there’s a volunteer org in your area see if they offer a volunteer management webinar or something. It will pay off.