diatomaceous earth and vinegar

diatomaceous earth and vinegar

I have a few questions about these things...and thought I'd ask you experienced gardeners what you think...

Diatomaceous earth:
Have you used it before? With what kind of results? How often did you have to apply it?
(I'm hoping to control some ant populations that I suspect are farming aphids around my favorite flowers).

Vinegar:
Same questions as above, but specifically, I'm curious about it's possible success in killing turf instead of weeds. (I'm in the process of de-grassifying my lawn but want to forgo chemicals such as Roundup.) I also wonder how much may leech into the soil and kill desired plants.

Thanks in advance for your expertise and opinions.
Getting Ready for Spring

Getting Ready for Spring

My Room

My Room

Plant ID please!

Plant ID please!

Peektures

Peektures

More things in the garden!

More things in the garden!

Mysteries abound!

Mysteries abound!