That's Not My Lizard!

With apologies to Beth Ferry, author of the "That's Not My (Monkey, Princess etc)" books for children.  Mrs Mac came almost calmly into the living room to say (more agitatedly than was suggested by her demeanour) "there's some kind of reptile in the bathroom".  Said reptile turned out NOT to be one of these sweet little lizards in the pic, but a big fat, bright green, Gecko type, leering at us from atop the radiator.  Everybody tells you that you don't get these in France, but we have had them in the gardens of all three French houses. We think he came in through the bathroom window (unprotected by a silver spoon) to get away from the heavy rain.  Ever so green and leery he was!  Soooo, what do you do when you find a big fat Gecko in your bathroom?  Shiver a little at first, then gird yourselves for action!  Mrs Mac held a large shopping bag up towards him whilst I poked him gently with a stick to make him jump.  Bingo, into the bag he went with a loud plop and we took him outside and set him free at the bottom of the garden. (Hope he doesn't know his way back to the bathroom window!).  It was very rainy today and we settled our "post-Gecko-catching" nerves by applying three coats of anti-insect treatment to the wooden beams in the guest room.  That's three coats each year for the last three years, so hopefully those nine coats will wave goodbye to woodworm etc.  Now what can you paint on to repel Geckos??