At university campuses, groundskeepers are often called horticulturists. In these situations, a staff of gardeners or groundskeepers maintains the gardens. During the Dunsmuir era, approximately 100 gardeners and groundskeepers tended the estate. Between innings he performed sketches that involved players, umpires, groundskeepers and sometimes fans. Some came from VIPs; others came from the stadium's groundskeepers and janitorial staff. Groundskeepers dressed as astronauts kept the turf clean with vacuum cleaners between innings. They serve the university as ministers, groundskeepers, administrators and professors, among other professions. A probate court ruled they were groundskeepers, not household staff. Groundskeepers may make such decisions to allow for more spectators into the ground. In May 1917, the course had fallen into disrepair due to a lack of groundskeepers. A warning track this wide also lets groundskeepers avoid driving maintenance vehicles on the grass. Groundskeepers burned gasoline on the mound to dry it off. Early on, the groundskeepers also wore astronaut spacesuits to promote that futuristic image. A pitcher's mound is difficult for groundskeepers to maintain. This created concerns about the risk of injuries for players and maintenance for groundskeepers.