How do you complete bobsled bonanza on Plants vs Zombies?

Answer 1

you get to a level with the ice making Zombies you let them get about three or four spaces into your yard and pop the tiers with spike weeds then when the bobsled zombies appear use a jalapeno to kill them . repeat this four times in the same level

Answer 2

pick Jalapeno, and see it will melt the ice and then squash to defeat zomboni or you can use cherry bomb.