Starter button sticks and won't start

Moisture gets into the push button starter switch and causes arcing and a build up of carbon an dirt on the contacts. I opened up the switch and cleaned it with electronic cleaner then hit it with a touch of WD40. I now give the switch a little spray of WD40 after I wash the bike or ride in the rain. I use the spray straw a give a very short spray onto the side of the switch were it enters the housing and wipe away the over spray. Have not had a problem since.