Poison ivy and sumac will have recently revived, so they'll be particularly virulent. To avoid serious itching, wear a long-sleeved shirt, long pants, gloves and socks. Also watch where you stand and reach. Consider using a pre-exposure product to protect exposed skin. Wear gloves during a pickup and wash hands afterward.
Bacteria are always a threat.
Don't drain liquid-filled containers. You don't want to be splashed with anything unpleasant. Park as far from the road's edge as possible. Do not park on the shoulder. Adopting groups must provide at least one adult supervisor for every six children under 18 years of age.