How List Rented SFR for sale with no showings?

[Jay Young]

I have two SFR residences I would like to sell. Both are rented and in top condition. I want to list them for sale on the MLS, but real estate agents refuse to list them because I don't want showings. The last time I listed a property, I had a stream of lookers who dirtied up the house, used and dirtied the bathroom and agents left it unlocked and doors open many times. Police were called. On the few times I was present lookers asked absurd insulting questions. I want to show the house, AFTER there is an offer, an email or verbal is fine. I don't want folks looking for decorating ideas, the competition or a place to pee. Tell me where and how to do this, please.