So sad to hear, I would be devestated.
Cold Tip- Refrigeration slows mould growth. Keep your bags in the fridge once opened. Also Make sure they are always sealed with as little oxygen in the bag as possible to lower your chances of them turning bad.
Can understand that.
However:
as they do not use preservatives; they try their very best to ensure that the food arrives to you in top notch condition, but some bags may be pierced, or wrongly stored, etc causing mould to grow etc.
Sorry keep hearing this and have to correct.
Harrisons use Rosemary Extract and Natural Mixed Tocopherols as preservatives (Not sure if they use a mould inhibitor though). These have no nutritional value. As confusing as Tocopherols may seem I can assure you if Mixed tocopherols is on a label it definitely isn't a source of vitamin E.
I have a 1kg bag of the same stuff in my cupboard that I was sent for free by a livestock feed company for testing.
Here is what some of the label says:
NATUROX brand Plus
Dry Antioxidant
Description-
A Dry free-flowing product containing natural antioxidants, which is designed to protect pet foods, pet treats, and pet food ingredients from autoxidative deterioration and preserve freshness.
Ingredient Listing-
Amorphous Silicon Dioxide, Citric Acid, Natural Mixed Tocopherols, Vegetable oil and Rosemary Extract.
Health Hazard Data-
Eye Contact: Flush eyes with water for at least 15 mins
Skin Contact: Wash with water
Inhalation: Handle In well ventilated area. Remove to fresh air.
Ingestion: Consult a Physician.
Its use by date states it must be used within 9 months of when it was manufactured.
I was told by the company we only have to label the Mixed Tocopherols, the Vegetable Oil and the Rosemary Extract if we chose to use this preservative in our pellet.
Doesn't seem like the most toxic stuff but I would prefer to receive pellets directly after manufacturing and use them in a short enough period that preservatives aren't needed.
If current pellets were relying on real foods as their source of nutrition instead of artificial vitamins etc with extended shelf lives, and weren't using some type of preservative, they wouldn't be able to sit around for months risking mould infestation. Also wouldn't be able to be shipped as far as they are though.
Still not sure how harrisons get a shelf life longer than 9 months if the only close to natural preservative I can find only lasts 9 months by itself.