Please stop using antibiotics at home. Please, please, please. The stuff on your kitchen tables, on your walls all harmless, etc is HARMLESS and helps boost your immune system (yes that includes kids - they won't die). Most of the dangerous stuff is viruses (which are immune to your sprays). By using antibiotics without a prescription you're only helping the bacteria grow immune to them.
Why does it matter if a harmless bacteria grows immune? Because they pass the immunity onto other bacteria through a process called "horizontal transfer". Which effectively involves giving a completely different viral or bacterial species some of your genes.
The notable exception is soap, which is a minor antiobiotic. Always use this for a basic sterilisation of your hands.
http://physorg.com/news119267316.html