I use Bobbex for deer too, works very well. I did once use Milorganite but it only worked for a while and then would have needed re-applying if I could have got some more. I find with Bobbex that I have to respray every week or so while the flower buds are developing but I just go around with a hand-held spray bottle and direct it only at the buds. If it wasn't for Bobbex we wouldn't have many flowers here on roses, hostas, daylilies, phlox and sometimes sedums.
Sheesh, I've got a lot to say for myself here on ATP this morning,
I should go and do some housework or something.....now my laptop mouse has just quit, that will cramp my style a bit anyway