Cat deterrent for grass lawn -- Tired of cat p00p

[mattkime]

i think the batteries last two months or so. you problem should go away by then.

3d wrote:
[quote=norse]
>>So far the best deterrents seem to be sprinkler sprays with motion detectors. But I don't want to spray the mailman and visitors.

The motion sprinkler (Scarecrow) is very effective. It covers a large area and it doesn't hurt anyone. Can you aim it away from walk paths?

Yeah, I saw this online. Great reviews on it.
Do you keep it on 24/7? How long do the batteries last?