Biters- do you terminate?

[Bugaboo]

For me personally I have a 3 strike rule. All cases of biting are taken seriously around here. The first time is a conversation with the parents and a discussion of what our action plan is going forward. The second bite, the child is put on probation and a letter is issued stating any further biting is grounds for termination. The 3rd case of biting is termination.
I totally accept that aggressive behaviour is common in toddlers, however, that does not make it acceptable.
Furthermore, I as the provider owe an explanation to the parents of the bitten child. Its not a good conversation and I need to reassure them that I am taking the issue very seriously-- If I don't then I will loose that family and I do not want that to happen especially if they are a great family!