Weeds/Grass in concrete......

Beebop

Can anyone suggest how I get rid of grass/weeds growing out of cracks in concrete? Small problem is can't put anything down that is dangerous to dogs.
I have tried pulling them up but it is back breaking work and the weeds just come back!
Thanks
Beebop

Lube

Salt I hear works as does white vinegar

glasgowdan

Any standard weed killer (glyphosate-based) of course. Keep the dog away until it's dry (an hour or so), job done.

Berni888

There's another thread and post 4 explains about using salt & boiling water

Del_Astra

Just plain old boiling water straight out the kettle will do the trick. If you add salt it tends to be longer before you need to do it again.

Beebop

Ooh, thank you for all the replies - am off to boil kettle!

dixie_dean_2

I've used a few differen types opf weed killer and no joy. Always come back. Might boiling water and salt work better?

Del_Astra

Dixie - They still come back with boiling water and salt unless applied every so often.