The mole

Every winter and summer we have problems with the mole.  I have no idea if it is one or the whole family.  One year I planted 100 flowers.  Within three years they were all gone to Mr. Mole.  I love the flowers that come up in the spring.  All winter they burrow under the snow and make tunnels in the ground.  We find them in the spring.  Then comes the summer.  We plant potatoes, lots of them.  The one year Mr. Mole ate all the white potatoes.  I would dig till I saw a potatoe and when I grab it I find it has been eaten out.  He must not like red potatoes, or so I thought.  Last year we planted red potatoes and I guess he was hungry after eating all the broccoli plants down.  He went after the potatoes.  This is war.  I intend to plant potatoes.  Not sure yet how Bob is going to eliminate them this year.  I know he hasn't been successful any other year.  Any ideas?........