What common practice can lead to pest infestation in a food establishment?

Storing recyclables in paper bags can lead to pest infestation in a food establishment because paper materials can provide a conducive environment for pests. Paper bags can easily accumulate moisture and organic residues, which attract insects and rodents. Additionally, if there are any food particles or spilled liquids in or around the bags, it can further entice pests to congregate in these areas. Proper storage of recyclables typically involves using bins that are sealed or constructed from materials that are less attractive to pests, thus minimizing the risk of infestation. Optimal practices include regular disposal and cleaning to eliminate potential food sources that attract pests, which is not the case with paper bags.