Mini greehouse slugs
I have a small back garden and a small allotment plot, I use 2 of the plastic mini greenhouses (4 tiers) to start most of my crops off. I have just been out to have a quick look at everything and find slugs have eaten 3/4 of my tomato seedlings. I won't use pellets as I have a cat that is very curious, so how do I stop them. Beer traps work fine when buried in the dirt but of course my greenhouses are sat on my flat patio. I have tried eggshell in some of my outside pots of luttuce and the damned slugs and snails just crawl straight across. Please help I am literally losing everything I have spent time and money on.