Another alternate technique is to have a 'Graha Shanti Puja' performed by a properly trained Vedic Pundit. I also recommend these, they are very powerful and effective. But that is a Vedic ceremony that is performed, and you don't wear it around with you every day like the Kavach. I recommend both very highly. Since I have begun wearing the kavach, I still have problems come my way, but they seem to dissolve more quickly and reach less of a crisis level.
Life is smoother and richer in many ways.
And frankly, some people report they notice little benefit and after a month or three they put it aside. If you didnt feel the kavach was useful for you, you could give it away to someone with the same lagna for them to put on at the next start date. Almost everybody reports they like it and feel it has produced worthwhile benefits. Originally, I was just trying one out for myself, but I have not taken it off since the day I first put it on. In any case, it is both a personal and a professional recommendation.