Ditto no clorox or anything else that will also destroy healthy tissue. It really depends on the degree and depth of the thrush.
If it's already got a stronghold on the hoof and reached the point where the horse is sore and heading for lame, White Lightening, Clean Trax.
For less serious thrush issues that have crept down into the sulci but the horse isn't lame, ToMorrow works. ToMorrow is a cow mastitus treatment; sounds strange but it works really well, in many instances. After you syringe ToMorrow down in there, add some type of antibiotic ointment (out of the bathroom cabinet) and top that off with diaper rash cream to hold everything in the sulci for more than five minutes
If it's just starting, there are a lot of good things on the market. It will depend what's available in your local stores, if you don't want to order from a catalogue.
My favorite is Absorbine Hooflex "Thrush Remedy". TSC carries it but it's cheaper in some of the vet catalogues.
Thrush Remedy is oil based, and works on the hoof for quite a few days. I use it just as a maintenance tool, whether someone has smelly feet or not.
Anything with Purple Gentian in it, like Thrush Buster.