We used The Childproofer (Mark Altman). His websirte is www.thechildproofer.com We were extremely happy with his work. He is a bonded contractor and is a distributor for many products, so he comes prepared. The products he used were excellent, and they were much better suited to some of the more difficult areas we had than things I had bought and tried. He was very quick and professional. He gave us a walkthrough at the cost of $20 at which he recomended things we ought to do, and then asked us what we would like to do. There was no pressure in the whole process. He charged $80/hour for his install services. This was definitely worth it. He works extremely quickly.
I would give him my highest recomendation. rrh