Ecocheques have arrived! questions..

Some shops are more flexible than others -- however naming them on here is the fastest way to get the named stores to adhere to the rules with no flexibility -- Just ask when you are in there -- My experience it isn't the store name -- but rather the branch policy.

sometimes it's even down to the cashier you get

Vandenborre do not let you buy just anything with Ecocheques, see:
http://www.vandenborre.be/recherche?query=ecocheque%20accepte

For a Lawnmower, if it has a Eco label, then you can buy with Ecocheques, see BRICO site for example: https://www.brico.be/fr/services/eco-cheques

Just look for sowing that has a low Eco rating im not sure about those items but I imagine someone somewhere will be happy for the custom whatever