The bacteria that causes botulism is found naturally in soil.
Botulism is caused by not processing foods at a high enough temperature at the canning plant.
Most cases of botulism occur because home canners didn’t heat low-acid foods long enough before putting the food in jars.
Other cases are due to feeding infants honey, which can contain botulinum spores that the baby’s digestive tract can’t handle.
Thank you for that piece of info. Every time I read the warning on the honey jar I wonder why not feed to infants, but then I forget to do some research and find out why ... until the next time I see the warning on the honey jar. ;-)