If algae, plants, animals, or microorganisms accumulate on parts of your FieldKit, we recommend cleaning them with an abrasive sponge and a biodegradable cleaning product. We recommend Simple Green All-Purpose Cleaner if it is available to you.
If no Simple Green is available, we’ve also had success simply using a towel and clean water. Just be careful not to get in inside of the case (i.e. the circuit boards) wet!