Where can i get a toilet plunger with a wide end thing.

I got one from home pro but it doesnt work well on a square toilet hole.

I seen back home they have ones with a wide rubber thing on the end which would be perfect.

Where can i get one in Bangkok?

I bought this the other day in tesco for 150 baht and it works well, not so sure on a square opening though. it was in the hardware section no the toilet cleaning supply area. I found it really does create a nice little vacuum and did the trick.

Get a square point shovel, and break them up before flushing.