I grew up with Kyk as our lawns and Dad kept them immaculate with just a push mower. After many many years they did become too spongy and the brother in law bought his Victa over and gave it all a really severe haircut and it was back in tip top shape in no time. Only things I hated about it as a kid, it made you as itchy as hell to roll around on it and it was a haven for mosquitoes to hide out in waiting to pounce on you on a Summer evening.
