Personally I've never understood the "let nature take over" attitude. I've lived in the country all my life and you have to take control otherwise the nuisance plants, poison ivy, honeysuckle, sumac, wild grape, weeds, etc. takes over. Same with animals, ground hogs under buildings, mice, coyote, deer, etc. We had foxes, cute watching them play until neighbors chickens all over our pastures, deer destroying fruit trees, flowers, etc. Getting rid of them now we're starting to see turkey, quail & rabbits.
Cats take care of rats & mice. If you want destruction just let nature take over your property.
This big barn had been cleaned then within a few days loft, stalls & floors covered in bird crap. Here it is:
"Bird droppings can carry various pathogens, including bacteria and fungi, that can cause illnesses like psittacosis, histoplasmosis, and cryptococcosis. These pathogens can be inhaled when dry bird droppings are disturbed, becoming airborne."
Other people can welcome letting nature take over but I'm not one.