It doesn't suit mine as much as the salmon and potato simpsons, it's just readily available if I let my simpsons run out. I'm in the breeders club and pay £34 for a 15kg sack of simpsons, you just have to order 2 at a time. I've never tried fishmongers, I'd stick with what suits.
If it was the Dry form of Applaws, the only different ingredient that may of been a problem is cellulose. Cellulose low grade ingredient Cellulose is the scientific term for dietary fibre. It can come from the cell walls of all plants and is almost entirely indigestible to dogs which is good as its undigested form provides a wide range of benefits. Despite the benefits cellulose can have, it can be a controversial ingredient. As I mentioned above, cellulose is present in all plant cells and is abundant in many vegetables, fruits and grains. Some vegetables like sugar beet contain a very high proportion of fibre and are used as good quality, whole-food fibre supplements. Pure cellulose, on the other hand, is a white, odourless powder most often made from paper or wood pulp! (it really is!). Cellulose is found in many light diets since it helps to bulk out the diet whilst providing almost zero calories. As fibre supplements go, cellulose powder is not the best and some nutritionists recommend avoiding it altogether.
EBT have you ever known Applaws cause dry skin with your dogs? Caused issues with 2 of mine, had them on it for a fair while, and coats were dull as well as skin flaky. Switched to Fishmongers (60% fish) and their coats/skin improved hugely. Just wondered if others had the same issue, I know it's supposed to be an excellent food but just didn't suit mine.
Worth looking at Skinners duck or salmon varieties...the others don't seem great, but those 2 varieties will beat the contents of many brands twice the price!! Generally about £26 per 15kg for the duck, bit more for the salmon.
No need to be a member of Costco, just get someone that is already a member to do you a favour.