Well I could certainly provide a few pointers. Almost every city has food banks, homeless shelters and churches that will feed you and give away hygiene stuff. Often you can find places to shower and sleep as well. If you get into a new city you can usually find the where the local homeless hang out. Be nice to them, find…
for seriously though if you don't care about the resin (that shits grimey anyway) you can put salt and rubbing alcohol in there, shake it up like a mother fucker, rinse with hot water and repeat (usually takes two times) it'll get clean as new.