just kill it. it would die quicker with no water than letting it starve to death and both are cruel ways to let an animal die. just shoot the dang thing and get it over with. what you are doing to it now is torture.
deb
edited for language
maybe call first - i have worked with DNR for almost 20 years and the things i've seen. rarely did law enforcement ever issue a citation but give them a call and ask about "relocating a problem squirrel". they may even decide to keep it for one of their nature programs. you don't have to give...
take it to a national/state park and ask the rangers to release it for you. explain to them it is a killer squirrel and may attack people. they may choose to kill it after you leave thinking it rabid or they may set it free. don't let it starve to death - no animal deserves that. jmho.
deb...