Organic lawn feed advice

Hi,
I have a lot of wildlife in my yard, but my lawn also needs a boost over winter, and I don't want to damage the infrastructure in my garden.
We have many birds, hedgehogs and squirrels, which often bounce around in our garden.
I wonder if anyone has any experience with organic/natural lawn feed or fertilisers - and if they are even worth using.
Not sure if it's ok to post links here, but for reference only, here is what I'm looking at...
this:
https://www.originalorganics.co.uk/nature-safe-lawn-feed-10kg-bag
or
this:
https://icanlawn.com/all-natural-nutriboost
I have a lot of wildlife in my yard, but my lawn also needs a boost over winter, and I don't want to damage the infrastructure in my garden.
We have many birds, hedgehogs and squirrels, which often bounce around in our garden.
I wonder if anyone has any experience with organic/natural lawn feed or fertilisers - and if they are even worth using.
Not sure if it's ok to post links here, but for reference only, here is what I'm looking at...
this:
https://www.originalorganics.co.uk/nature-safe-lawn-feed-10kg-bag
or
this:
https://icanlawn.com/all-natural-nutriboost
0
Posts
for the fag ends of the aristocracy.
The stuff you're looking at is relatively expensive.
Pelleted Poultry Manure has similar NPK values and is a lot cheaper.
It good for any leafy plants - grass, lettuce etc
I use it on my lawn in the spring and sometimes use bonemeal in the autumn to strengthen the roots
e.g
https://smile.amazon.co.uk/Westland-Organic-Chicken-Manure-Pellets/dp/B006KS5HHW/ref=sr_1_3?keywords=chicken+manure+pellets&qid=1670432177&sprefix=chicken+ma%2Caps%2C124&sr=8-3
Wisdom is not putting it in a fruit salad.
This is primarily for use in my back yard, and the lawn area is about 15 x 15 metres (roughly).
The soil is quite clay based once you get about 1/2 a foot down (I guess that from how thick and difficult it is to dig).
Cheers
Cheers!