After the following conversation, I decided to make my own sign.
Ding! Dong!
Me: Yes?
Solicitor: I'd like to show you my cleaning products and get your opinion.
Me: (pointing to sign) Isn't that soliciting?
Solicitor: No, I don't consider it to be soliciting.
Me: Well, I do.
Solicitor: No, I don't think it is.
Me: Can I buy your products if I'm impressed with them?
Solicitor: Yes.
Me: (closes door)
My new sign:
No Soliciting
Solicitation so·lic'i·ta'tion n. [suh-lis-i-tey-shuhn]
1. To petition persistently; importune: solicited the neighbors for donations.
2. This means selling something.
3. Requesting donations.
4. Advertising
5. Surveys
6. Viewing my phone bill to see where you can save me money.
8. And yes, YOU too. If you don't know my first name, then don't ring my doorbell. TIA!
I'm taking votes on how long it will be before my house gets egged. By the way, for those of you in need of a nice unobtrusive sign, I found these.