you will find a lot of good quality questions in this book. for me it's not a problem as i don't, or haven't noticed any during normal use. some kits give you herbs you should steep yet others give you herbs you need to mix with alcohol after which filter after a few days. * rounded front tail and square back tail. find out you can rent this a little longer if your job is very large and you don't think the contractor will complete within that period. 