RE: Home made scent killer
Im not sure but I thought maybe you could use sport detergent instead of shampoo.
And also, I read somewhere that the hydrogen peroxide that you buy in teh brown bottles at the grocery store has stabilizers and other stuff in it that smell and don't work as well. it said you should go to the pool and spa store and buy pool shock, which is pure concentrated h2o2, and dilute it yourself (be careful). A jug of it should last you years.