Well, I have decided to spay the around the house with Ortho's home defence bug spray, I had bough a big bottle last year... to my surprise I walk up and front porch was full of dead or almost dead sink bugs.. so the stuff works, you may need to collect them and "ENSURE" they are dead as it looks it may only make them dead for a short time.
http://www.orthohomedefense.com/
let me know if you have better luck.
they are coming out big this year.