Bamboo can perish because of two reasons. The first one is that too much water or humidity breaks the wood down. The second reason is that the bamboo can crack from not having enough moisture.
Before washing or touching the bamboo with any water you have to make sure that you remove any particles or resins on the surface to avoid distasteful scratching and marks. You can get rid of this dust by vacuuming the surface or dusting it regularly. Sand down any splinters that are sticking out in order to make the furniture user-friendly. Rough and sharp edges can ruin the look of the furniture.
When you wash the surface make sure that you wring excess water from the sponge or cloth. The more water that comes in contact with the bamboo the softer it will become. More water applied to the furniture can cause it to warp or distort. The water you use during the cleaning process can have a few drops of dishwashing liquid added.
Allow the furniture to dry completely before using it. Although most of the water was removed from the sponge the bamboo can still be deformed if someone sits on it whilst it is still wet. To speed up the process you can use a fan or a hairdryer. To save energy and electricity just let the furniture sit outside in the sun for a few hours.
Once the bamboo is dry you can apply essential oil all over it to keep the wood moist but not wet. The essential oil or furniture oil also maintains the wood throughout the year and gives it a new look.
In a case where one of the legs is cracked, you can apply paste wax to create a seal. By creating the seal you are preventing the breakage from spreading throughout the furniture. When applying this special wax ensure that you have the correct colour so that the damage does not get noticed easily.