Unfortunately, no flower bulbs have the capacity to really scare off mice or rats. There are a few precautionary measures that can be taken to keep these pests from eating your flower bulbs, however. First, plant the flower bulbs deeply enough and cover them properly with soil so that mice and/or rats are not attracted to the planting site. Secondly, cover the border where the flower bulbs have been planted with some finely meshed wire netting. Lay out this netting so that it more than covers the border and then push the edges of the netting slightly into the soil.