Should we destroy supplies left for illegal immigrants?

I've seen videos and read about border control doing this regularly. Should they continue to do this, and should others do this too to help them and be good citizens? Do you think it's good to discourage immigrants from making dangerous trips or is it inconsiderate? Is it wasteful or does it clean up areas and keep wild animals away? Also, I usually hear about this being done with food and drinks, but if it's going to be done shouldn't it be with clothes and shoes as well? Btw, the supplies are usually left by civil rights groups in opposition to the government. Should that stop or not? It seems most people feel strongly either one way or the other on this issue, so what are your thoughts?