Chigger larvae attack humans by inserting mouthparts into hair follicles or skin pores to feed. Chiggers are usually a problem in late spring and summer. Their bites can cause intense itching. Fact Sheet 2100 provides details on how to treat bites, identify infested areas and treat them. They have unsegmented bodies and usually have a hard shell.
Snails have a prominent external shell and slugs have an internal shell.
They both glide upon a slimy liquid they exude. Snails and slugs need damp soil and humid conditions to survive. They feed primarily at night or on cloudy days. They avoid sun by hiding in cracks, holes and under debris, such as mulch, leaves, rocks and boards. When conditions become very dry, populations of these two garden pests will diminish greatly.