as gross as it sounds,its not that tough to do at home,you can even watch instructional videos on it at youtube to help out,all you need is a few napkins,a calm dog,and what i do is usually have a bath tub ready to give him a bath afterwards,but thats not necessary,also,if you have an aversion to VERY bad smells,id suggest bringing him to a groomer or vet that does it,it can be quite nasty,other than that,its just a matter of squeezing with your two thumbs from the 9 oclock and 3 oclock position around the dogs anus in an upward fashion in order to "squeeze" out the glands,sorry to get so graphic,but thats what is involved,fairly simple,also,constant licking may not be a sign,but "butt scooting" across the carpet is almost a 99 percent shot that the glands need to be expressed.