Pet For Sale Ads

What is more conducive to the pursuit of responsible pet owners of kittens?
Should I put a sign in front of the house that says, kittens for sale, or should I take the kittens to a local park where a lot of children and parents and show them there? I tried ad and just kept calling the non-serious. There are no animal shelters in this city or even close, so these are my options. What would you do?
Placing ads in the vet's office. Only responsible pet owners go to the vet:) Then get your cat neutered:)
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