It’s very unlikely a survey would be any help. There are people all over the country who would probably swear by what they feed ‘their’ hogs – which is likely to be a huge variety of different brands and types of cat, dog, or hog food.
Hogs tend to get used to what they are normally offered and don’t immediately adapt to change. But they will eat what they are given if hungry. The problem is that people tend to think they don’t like whatever the new food offered is and try something else the next night, etc. When they just need to stick to it. That might contribute to why Vale mix all the different flavours together.
http://www.valewildlife.org.uk/wp-content/uploads/2018/04/Feeding-wild-hedgehogs.pdf
But cat, dog or hog food is all they need. They do not need any ‘extras’. The cat, dog or hog food offered as supplementary food is treat enough for them.
