We used a halti on Geordie and she really wasn't keen. She actually scratched right next to her eye which made it bleed. I felt it didn't really solve the problem either - just covered it up because as soon as we didn't use it she pulled again. So what we did was put it on but didn't actually connect it, Just put lead on collar and she didn't pull then eventually got it down to takin it off when she was walking nice and putting it on again if she started pulling again and she seemed to realise to walk nice. She still sometimes pulls but not nearly as much or as bad