A study of manual post-milking teat disinfection using vacuum operated hand held teat sprayers in 2013 (1) identified that on average only 3.77 of teat ends were "hit" with chemical and 50% of teat barrels were covered. There was also significant variation between operators. It was suggested that an automatic system would remove this variation and apply disinfectant more consistently. In this study Locate'n'Spray~(TM) automated teat spray devices were installed at six stalls on a 60 point rotary parlour. Between June and the beginning of August 2014 an observation and evaluation study was carried out by The Dairy Group over 12 milkings, using six different spray timing regimes.
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