Years ago I had a large round and (Stupidly) employed friends to work for Me.Surfice to say I hired and fired them more often than an escort changes Her undies ! (Hopefully)

Now I just have a single round that I do Myself but am thinking of expanding over the next 12 months and taking on 1 or 2 workers/Not friends !!!
A couple of Questions i,d be interested in hearing Your responses to.
1/ Anything You have in place to insure Your employees don,t cut corners on Houses? I was thinking for example pay Them 60% but keep 10% back for 3 months So if there are any Genuine complaints They lose The other 10%.
2/ On the Subject of wages WHat Percent people are paying There Employees?
3/ Has anyone used The Door knocker companys and if so what was there experience with them?