Hello! Have you tried using the Find Local Pros tab on here? You can do so here: http://www.houzz.com/professionals/

make a path to back yard using maybe crushed gravel. Then place a unique used window or door where you want it to connect to a fence or don't build a fence at all & mount the window or door as stand-alone divider from front & back yard.

Thanks everyone for the warnings. Honestly I had not thought that could be possible so just in case I'll gear up with a mask to avoid inhaling any of it. I will still need to remove it, but from what I read the problem with asbestos is if you sand it and make it into breathable particles, so ripping it out should be ok. I've looked up in youtubr and there seems to be a tool called mastic remover that you can put on your floor sander and it would scratch the surface removing any of that stuff.

If it's brand new, have you tried asking the supplier what they recommend? We got a booklet from our supplier when we got new carpet with ways to treat various stains on that particular carpet. Each kind of carpet will be different. Also, have you tried a professional carpet cleaner? If all else fails, try your luck with your insurance company - I know others who have got carpet replaced because of bad stains - depends on your policy.