Surface areas on walls, under loose woodwork, between bricks and around other bat entryways often have a smooth, polished appearance. The stained area is slightly sticky, may contain a few bat hairs, and is yellowbrown to blackish brown in color.
cross connections What is a Cross Connection? A cross connection is a point in a plumbing system where the potable water supply is con-nected to a non-potable source. Briefly, a cross connection exists whenever the drinking water system is or could be connected to any non-potable source (plumbing fixture, equipment used in any plumbing system).
Tip If you need to connect two hubs together and neither one has an uplink port, you can connect them together with a cross cable. A cross cable is a twisted-pair wire that has the transmit-and-receive pairs switched at one end; this provides the same functionality as an uplink port.