Be cautious when using "gravel." Sometimes it is crushed limestone.

Paul
"Diana Kulaga" wrote in message
nk.net...
How about just pea gravel? If you use aliflor or one of the more
porous kind of rock, you will trap moisture. A smooth gravel will dry
out more quickly.

For mature Catts & Dends (and a few other things) I use plain old river
rock
from HD.

Diana