Pill Bug Infestation. Pill bugs form an important component of the larger decomposer fauna, along with earthworms, snails, and millipedes. All of these animals return organic matter to the soil where it is further digested by fungi, protozoans, and bacteria, hence making vital nutrients available to plants.Click to see full answer. Regarding this, what is the difference between a pill bug and sow bugs?The main difference is that pillbugs can roll themselves up into a protective ball when threatened, like an armadillo; sowbugs cannot. Sowbugs have a pair of short tail-like structures on the end of their bodies; pillbugs do not.Beside above, how do pill bugs sense their environment? Pillbugs have the senses of sight, smell, and touch. They can use their sense of smell to find food and identify mates and other pillbugs. They have hairs called setae on their antennae and mouthparts that are used for touch, and can detect objects that they brush against. Herein, what does a pill bug eat? Pill Bug Diet. Pill bugs, sometimes also referred to as roly-pollies, primarily consume plant matter that is either decaying or is already dead and decomposed. Their preferred foods are soft decaying plants like grasses and leaves, but they may also eat mulch used in landscaping around the house.What are some stimuli that pill bugs respond to?It is unknown on how they respire judging from the data given, but they require moist air in order to breathe. What are some stimuli they seem to respond to? Some of the stimuli they seem to respond to is that they freeze when being touched and run away when being hit with water droplets.