Keeping Bats Out of My House

By Corinne (Guest Post)

Don't get rid of them, they eat insects, as mentioned before.
You can encourage them to 'roost' somewhere else though. Try an outdoor store or a store specializing in birds and feed/houses... they actually make 'houses' for bats, that will encourage them to sleep somewhere else instead of over "your" territory :)
You could also try buying that plastic spike stripping, that discourages birds from sitting on roofs, rafters, flag poles etc... My guess would be to attach it on the opposite side of the rafter so the bats have nothing to hang onto.
here is a link to Birds Unlimited, a bird store that sells bat houses - http://www.shopwbu.com/product/part_number=1254/567.0.25796.0.0.0.0 you can order online... or just look at it and maybe have a handy craftsmen try to build one... since its not exactly inexpensive :(
and a link for that spike stripping that birds absolutely loathe - from ace hardware (maybe you have them where you live?) - http://www.acehardware.com/product/index.jsp?productId=2406863