kickon - use the bat argument if its relevant, but the very word makes me angry and reminds me of the appalling waste of public money installing "bat bridges" across the A38 close to Castle Air's place at Liskeard, looking like this...
If your local council is anything like the ones in Cornwall who
spent a staggering £300,000 on this you may end up making a rod for your own back in the council insisting on providing extra stuff to protect the bats...
Yes, we have to say this is BATTY but true!