If they do, chomp removes them. 

#!/usr/local/bin/perl 

$/ = "::"; # set input line separator 
$scalar = "testing::"; 
$num = chomp($scalar); 
print ("$scalar $num\n"); 
@list = ("test1::", "test2", "test3::"); 
$num = chomp(@list); 
print ("@list $num\n");