I know this is old BUT . If you think snakes will not eat light bulbs, golf balls and other semi egg shaped items that are in a nest box...you are very very wrong. They used to sell glass eggs that when the snake tried to break the egg it would shatter inside them. Light bulbs do the same. Golf balls may just deter them from eating real eggs if they fill up on golf balls . Wood eggs I don't know how it affects them. i had one eat the wooden eggs and real eggs but haven't seen the snake since.