deleting /tmp files from crontab

[David Banning]

I am attempting to delete my .spamassassin files from my /tmp directory 

putting a command in my crontab;

find /tmp/.spam*  -mmin +360 -delete

renders the following error;

find: -delete: /tmp/.spamassassin10101hXUUVytmp: relative path potentially not safe

looking in past postings on this matter, post people add the -mindepth 1,  however in my case while it elliminates the error,
it does not delete all the files, perhaps because some of the .spam*  files are directories.

I wonder if someone has a solution for this.