Rhino sewer hose is good!
For the people that have purchased a new (or used) RV during the winter months, make sure when you get it to your destination that you wash all the salt from underneath the RV. Use a pressure washer if necessary or strong hose stream. Use a chemical called "KLEAN STRIP" phosphoric prep & etch, can be applied with a brush or pump up bug sprayer. Follow directions carefully, can be purchased at Lowe's or Home Depot in the paint department. After using the chemical as per directions, paint with a good coat of Spray "RustOleum" . You can fill in the open end box portion of the frame that supports the axles with the foam insulation in a can. After is dries and swells up, simply cut of the excess with a hack saw blade.
KLEAN STRIP is also known as OSPHO!
For the one that have two dump connections and dump valves you cannot reach, here are some pictures of a suggestion.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS