it can be used to replace natural stone, clay and even wood. i love this little cluster of goodness! if you have any other ideas come along and have your say. when’s the last time you checked the batteries in yours? then it is 5 to 6 weeks till harvest. i simply had to appreciate you once again. bit report: bait has been small and a ¼” cast is required. we require no money up front. he makes no mistake in finding the back of the net. 