Do you have long haired cat? Are you demoralized by inextricable knotting?
You know that there is a solution, and incidentally it’s the food.
No one has ever discovered the cause that makes this annoying but dangerous cluster of hair, I can assure you that I saw many cats stop having this problem by eliminating from their diet all the foods that contain meat derived from intensive farming, obviously first of all the various brand kibbles.
What makes these knots form? Simply an inflammation of the sebaceous gland, which puts abundant sebum secretions, that ends up becoming a great glue.
It can only be eliminated through careful use of scissors.
If you cut the knots and change to food to one that uses fish from the sea as its protein, you will see that in most cases, the problem will not reappear, indeed, the hair will be shiny and smoother than you have ever seen, with no need for daily brushing.
If you like it, let me know how it worked for you!