Hi Dori and welcome to GoY, why would you want to kill the spiders? The do you no harm and catch and eat insects like flies.

i agee xx .

i agree about them being useful organisms but do you have spiders that have poisonous bites for humans like they do in Australia?

Perhaps you need to ask at the local government agency. There may be byelaws that have to be followed.
sorry if this doesnt seem helpful.

There must be a predator that eats spiders ?

Check over some old answers from the Goy archive. I have and one suggested Baby Powder to get rid of ants, as they dont like the scent.

i dont think theres any dangerous spiders in new york thow like puffer fish all spiders are poisaness . wasps and hornets and birds and shrews etc eat spiders . even some spiers eat spiders .