worm problem

my lawn has small patches of dirt mounds which are spreading rapidly. The lawn was once comfortable to walk on and is not clumpy and hard. I heard this may be due to an over-population of worms destroying the roots. I poured a gallon of water on a dirt spot and saw half a dozen worms surface. How can I treat this? without chemicals, if possible.

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by joseph:
my lawn has small patches of dirt mounds which are spreading rapidly. The lawn was once comfortable to walk on and is not clumpy and hard. I heard this may be due to an over-population of worms destroying the roots. I poured a gallon of water on a dirt spot and saw half a dozen worms surface. How can I treat this? without chemicals, if possible. <HR></BLOCKQUOTE>
I am going to watch your entry carefully. Whatever will kill your worms might help my mole problem, as moles feed off earthworms and grubs. Say! Wanna borrow my moles?
Good luck! Kay